I am, I am the Lord: and there is no saviour besides me.

“It has been sufficiently demonstrated that God exists and that his essence is incomprehensible. Furthermore, those who believe in sacred Scripture have no doubt that he is one and not several. For the Lord says at the beginning of his lawgiving, "I am the Lord your God, who brought you out of the land of Egypt. You shall not have strange gods before me." And again: "Hear, O Israel: the Lord your God is one Lord." And through the mouth of the prophet Isaiah: "I am," he says, "the first God, and I am the last, and there is no God besides me. Before me there was no God, and after me there shall be none, and beside me there is none." And the Lord speaks thus to his Father in the holy Gospels: "This is eternal life: that they may know you, the only true God." With those who do not believe in sacred Scripture we shall reason as follows. The Divinity is perfect and without deficiency in goodness or wisdom or power. He is without beginning, without end, eternal, uncircumscribed; to put it simply, he is perfect in all things. Now, if we say that there are several gods, there must be some difference to be found among them. For if there is no difference at all among them, then there is one God rather than several. But if there is some difference, then where is the perfection? For if one should come short of perfection in goodness, or power, or wisdom, or time or place, then he would not be God. The identity of God in all things shows him to be one and not several.”

“And now thus says the Lord, etc. Here he shows them the divine love through the remedies which he granted them amid their distresses. And it is divided into three parts. In the first he promises future remedies, to show his love; in the second he recalls past benefits, to confirm the promise: "thus says the Lord, who gave," etc.; in the third he excludes merits, to take away presumption: "you did not call upon me," etc. Concerning the first he does three things. First he shows toward them the privilege of divine love; second, from the promised remedies, he excludes any partnership in divine power: "all the nations are gathered together," etc.; in the third he sets forth the sign of his love: "thus says the Lord your redeemer," etc. Concerning the first, he promises them three remedies. First, sustenance in punishments, excluding fear by the divine presence: "creating you" — as to the principles of substance, Deut. 32: "he is your father," etc.; "forming" — as to the form which he gave, Gen. 1: "the Lord formed," etc.; "redeeming" — from evils, Hosea 13: "from the hand of death," etc.; and "I have called" — unto grace, Hosea 1: "I will call 'not my people,'" etc. He sets forth the promise: "when you shall pass through the waters" — the Egyptians; "the rivers" — the Chaldeans; "the fire" — the Greeks; "the flame" — the Romans. For they were not consumed entirely. Ps. 65: "we passed through fire," etc. And he assigns the reason for this: "for I am the Lord," etc., above, 12: "for he himself, God, is savior," etc. Second, he promises a commutation of punishments, namely that he will punish others in his place. And he sets forth the commutation. "I have given a propitiation" — that is, that I might be propitiated toward you, as it were by the punishments of those who provoked you to sin by the hope of their help. "Saba" — a city of Ethiopia. Prov. 11: "the just man out of distress," etc. And he assigns the reason, namely God's own love: "since you have become honorable" — that is, I have made and accounted you honorable. "For you" — for your liberation. Jer. 31: "if a son honorable to me," etc. Third, he promises them liberation of every kind from tribulations; and concerning this, three things. First he promises the benefit of liberation: "do not fear, from the east" — because they had been scattered in every direction. Above, 11: "he will gather the fugitives," etc.; Jer. 31: "behold I will bring them," etc. Second, he sets forth the merit of liberation: "and everyone who calls upon me I will bring" — "unto my glory," that he may glorify me, and I may appear glorious in him. Joel 2: "everyone whosoever shall call upon," etc. Third, he promulgates the precept of liberation. "Bring forth," O Cyrus, "outside" — outside the land of captivity — "the people," namely of the Jews. Jer. 5: "hear, foolish people," etc. "All the nations." Here he excludes any partnership in godhead. And first he shows the falsity of the other gods by way of a judgment, setting forth the nations' agreement with idols: "are gathered together" — into one error. Ps. 13: "all have gone astray," etc. — seeking a sign of godhead. "Who among you" — that is, which of your gods? Or he speaks to the idols, and seeks testimony. "Let them give witnesses," and "let them be justified" — that is, let them be justly called gods; and let the witnesses hear future things from them, and speak testimony on your behalf. Above, 41: "there is none announcing nor foretelling," etc. Second, he shows the truth of his own godhead: and first as to knowledge; second as to power, "you are witnesses," etc. Concerning the first, two things. First he gives testimony, assigning men as witnesses: "truly you are witnesses," etc.; "my servant" — the people of Jacob, or Christ. Acts 1: "you shall be witnesses to me," etc.; setting forth the manner of knowing: "that you may know" — as to those things which can be known of God through natural reason; and "that you may believe" — as to those things which are above reason; and thus "you may understand": for unless you shall have believed, you shall not understand, above, 8, according to another text. He also sets forth the saying of the witnesses, that he alone is God: "for I alone" — "I am" — "God." "The one who forms," or "the one formed" — namely, an idol — Deut. 32: "see that I am he alone," etc.; and that he alone is Lord: "I am" — singularly; "I am" — excellently, etc.; Acts 4: "there is no salvation in any other," etc. Second he gives a sign of godhead. "I have announced," etc.; "there was not" one from whom you could know. Ps. 80: "Israel, if you will hear me," etc. "You are witnesses," etc. Here he shows the truth of his godhead as to power: and first he gives testimony, "you are witnesses," etc., John 8: "I am the beginning," etc. Second he gives a sign of power in punishing: "and there is none who" out of the "hand" — as Deut. 32, Job 10; and in working, "I will work," etc., above, 14: "the Lord of hosts has decreed," etc. "Thus says the Lord," etc. Here he sets forth the sign of love: because for their sake he destroyed the Babylonians glorying in their ships, on account of the multitude of waters. "I have sent forth" — namely, wrath — Jer. 51: "the Lord has planned and has done," etc. "Thus says the Lord who gave," etc. Here he recalls past benefits, to confirm hope concerning future ones. And concerning this he does two things. First he recalls the past benefits when they went out from Egypt, in their governance. "In the sea" — the Red Sea, Exod. 14; "in the waters of the torrent" — in the Arnon, Numbers 21; in the Jordan, Joshua 3. And as to the destruction of enemies: "who brought forth the chariot" — the chariots of Pharaoh, etc., Exod. 15: "his chosen princes," etc.; "as flax" — cut off in a moment. Second he promises things much greater in the future; and concerning this he does three things. First he shows the greatness of future benefits by comparison with the former: "do not remember" — as if to say: they are not worthy to be held in memory in comparison with the future ones, Phil. 3: "forgetting indeed those things which are behind," etc.; by their newness: "behold I make new things" — unheard of, Apoc. 21: "behold I make all things new." And by their determination: "I will set in the desert" — that is, in the land of the Jews, which was formerly desert — "a way" — of those going to the festivities; "rivers" — of consolation, Ps. 106: "he turned the desert into pools," etc. And if these things are expounded literally of the liberation from the captivity of Babylon, they are said to be greater than the liberation from Egypt — not on account of greater miracles, but because the kings from whose power he liberated them were more powerful than Pharaoh; or because they came from a more distant place. But if they are referred to the liberation wrought through Christ, it is clear that nothing so admirable had preceded it in past ages. Second he shows the usefulness of the benefits among the nations: "and the beast of the field will glorify" — that is, the Gentile living beastially, converted to Christ; or those seeing how I free the Jews. Ps. 148: "beasts and all cattle," etc.; and among the Jews: "that I might give drink" — of doctrine and consolation, Deut. 7: "the Lord has chosen you," etc. Third he assigns the reason: "this people for myself" — unto my praise. Prov. 16: "all things for himself," etc. "You did not call upon me." Here he excludes the merits of the Jews for obtaining such great benefits; and concerning this, three things. First he excludes merit; second he gives room for a response, "bring me back to mind," etc.; third he removes a certain manner of responding, "your father," etc. Concerning the first, three things. First he excludes merit: "you did not call upon me" — and all these things are said because they did not offer these things to God with their whole heart, but partly to God, partly to idols; or because they conferred nothing on God; or because they did them in hope of temporal recompense; or because after the coming of Christ they were not accepted. Mal. 3: "who is there among you that would shut the doors," etc.; Ps. 49: "shall I eat," etc. Second he shows their guilt: "nevertheless, to serve" — as if to say: you have shown me servile, while, though you offended me, I did not punish. Above, 1: "they have become troublesome to me," etc. He speaks in a human manner. Third he shows the benefit given freely: "I am," etc., Ps. 24: "for your name's sake you will be propitious," etc., Ez. 36: "not for your sakes will I do this," etc. "Bring me to remembrance," etc. Here he gives room for a response. "Bring back" — as if to say: think again on what I have done for you; tell if you have anything, to excuse yourself, or to accuse me, that you may be justified, that is, that you may be judged just. Job 33: "if you have anything to say," etc. "Your father." Here he removes a certain way of responding. For they could allege the innocence of their fathers; but against this he speaks. "Father" — Adam, Gen. 3; Abraham, seeking a sign concerning God's promise, as though doubting, Gen. 15; "interpreters" — Moses and Aaron at the waters of contradiction, Num. 21; "I have profaned" — that is, I have allowed to be profaned — unto utter destruction: for all died in the desert, except Caleb and Joshua. Ps. 105: "we have sinned with our fathers," etc. (Collationes, chap. 43). The Lord frees the saints from fire: of carnal temptation, Job 31: "it is a fire even unto consumption," etc.; of temporal tribulation, Ps.: "you have tried me by fire"; of eternal damnation, Matt. 25: "depart, you cursed"; of divine indignation, Deut. 32: "a fire is kindled," etc. In which are burned: the lascivious, 1 Cor. 7: "it is better to marry," etc.; the impatient, above, 13: "their faces shall be burnt," etc.; the impenitent, Ps.: "the flame has burned up sinners"; the proud, the same: "the foundations of the mountains," etc. He also frees from waters: of pleasure, Prov. 9: "stolen waters," etc., in which they are suffocated through luxury; of cupidity, Exod. 15: "they sank as lead," etc., in which through avarice; of adversity, Ps.: "the waters have come in even unto the soul," etc., in which through impatience; of worldly power, Apoc. 17: "the waters upon which she sits," etc., in which through pride. Bring God back into memory as to: the wonders which he has done, that they be venerated, Ps.: "remember his wonders," etc.; the benefits which he gave, that thanks be rendered, Ecclus., last chapter: "I have remembered mercy," etc.; the torments which he endured, that compassion be shown, Lam. 3: "remember my poverty," etc.; the precepts which he gave, that they be observed, Ps.: "that they may be mindful," etc.”

“I have declared, and I have saved, and I have showed,.... The Targum is, "I have showed to Abraham your father what should come to pass; I redeemed you out of Egypt, as I swore to him between the pieces; and I caused you to hear the doctrine of the law at Sinai.'' But the sense is, that God had declared by his prophets, long before the Messiah came, that he would send him; that he should come and save his people by his obedience, sufferings, and death; accordingly he was come, and was the author of salvation; the Lord had wrought out salvation by him, as he had declared he would; and this he had shown, published, and made known by the everlasting Gospel, preached among all nations: when there was no strange god among you; that assisted in this salvation; the arm of Christ alone wrought it out: or, "and this is not strange among you" (i); this work of salvation wrought out is not strange among you; it is well known unto you, being published in the Gospel. (i) "et non est in vobis alienum vel peregrinum", Musculus.”

“The address now closes by holding up once more the object and warrant of faith. "I am Jehovah; and beside me there is no Savour. I have proclaimed and brought salvation, and given to perceive, and there was no other god among you: and ye are my witnesses, saith Jehovah, and I am God. Even from the day onwards I am so; and there is no deliverer out of my hand: I act, and who can turn it back?" The proper name "Jehovah" is used here (Isa 43:13) as a name indicating essence: "I and no other am the absolutely existing and living One," i.e., He who proves His existence by His acts, and indeed by His saving acts. מושׁיע and Jehovah are kindred epithets here; just as in the New Testament the name Jehovah sets, as it were, but only to rise again in the name Jesus, in which it is historically fulfilled. Jehovah's previous self-manifestation in history furnished a pledge of the coming redemption. The two synonyms הגּדתּי and השׁמעתּ have הושׁעתּי in the midst. He proclaimed salvation, brought salvation, and in the new afflictions was still ever preaching salvation, without there having been any zâr, i.e., any strange or other god in Israel (Deu 32:16; see above, Isa 17:10), who proved his existence in any such way, or, in fact, gave any sign of existence at all. This they must themselves confess; and therefore (Vav in sense equivalent to ergo, as in Isa 40:18, Isa 40:25) He, and He alone, is El, the absolutely mighty One, i.e., God. And from this time forth He is so, i.e., He, and He only, displays divine nature and divine life. There is no reason for taking מיּום in the sense of יום מהיות, "from the period when the day, i.e., time, existed" (as the lxx, Jerome, Stier, etc., render it). Both the gam (also) and the future 'eph‛al (I will work) require the meaning supported by Eze 48:35, "from the day onwards," i.e., from this time forth (syn. לפני־יום, Isa 48:7). The concluding words give them to understand, that the predicted salvation is coming in the way of judgment. Jehovah will go forward with His work; and if He who is the same yesterday and today sets this before Him, who can turn it back, so that it shall remain unaccomplished? The prophecy dies away, like the massâ' Bâbhel with its epilogue in Isa 14:27. In the first half (Isaiah 42:1-17) Jehovah introduced His servant, the medium of salvation, and proclaimed the approaching work of salvation, at which all the world had reason to rejoice. The second half (Isaiah 42:18-43:13) began with reproaching, and sought to bring Israel through this predicted salvation to reflect upon itself, and also upon its God, the One God, to whom there was no equal.”