The interpretation timeline
Psalm 70:3 Douay-Rheims

Be thou unto me a God, a protector, and a place of strength: that thou mayst make me safe. For thou art my firmament and my refuge.

A.D. 430 – 1849 4 witnesses 5 excerpts

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“For this John, my dearest brothers, was one of those mountains about which it has been written, "Let the mountains receive peace for your people; and the hills justice." The mountains are eminent souls; the hills are little souls. But the mountains receive peace for this very reason, so that the hills can receive justice. What is the justice that the hills receive? Faith, because "the just person lives by faith." The lesser souls, however, would not receive faith if the greater souls, who were called mountains, were not illuminated by wisdom itself, so that they can convey to the little ones what the little ones are able to grasp, and so that the hills can live by faith because the mountains receive peace. By these very mountains it was said to the church, "Peace be with you." And the mountains themselves, in announcing peace to the church, did not set themselves apart in regard to him from whom they receive peace so that they might announce peace truly and not deceitfully.”
Source
“"Be Thou unto me for a protecting God" [Psalm 71:3]. Let not the darts of the enemy reach unto me: for I am not able to protect myself. And a small thing is "protecting:" he has added, "and for a walled place, that You may save me." "For a walled place" be Thou to me, be Thou my walled place....Behold, God Himself has become the place of your fleeing unto, who at first was the fearful object of your fleeing from. "For a walled place," he says, be to me, "that You may save me." I shall not be safe except in You: except You shall have been my rest, my sickness shall not be able to be made whole. Lift me from the earth; upon You I will lie, in order that I may rise unto a walled place. What can be better walled? When unto that place you shall have fled for refuge, tell me what adversaries you will dread? Who will lie in wait, and come at you? A certain man is said from the summit of a mountain to have cried out, when an Emperor was passing by, "I speak not of you:" the other is said to have looked back and to have said, "Nor I of you." He had despised an Emperor with glittering arms, with mighty army. From whence? From a strong place. If he was secure on a high spot of earth, how secure are you on Him by whom heaven and earth were made? I, if for myself I shall have chosen another place, shall not be able to be safe. Choose thou indeed, O man, if you shall have found one, a place better walled. There is not then a place whither to flee from Him, except we flee to Him. If you will escape Him angry, flee to Him appeased. "For my firmament and my refuge You are." "My firmament" is what? Through You I am firm, and by You I am firm. "For my firmament and my refuge You are:" in order that I may be made firm by You, in whatever respects I shall have been made infirm in myself, I will flee for refuge unto You. For firm the grace of Christ makes you, and immovable against all temptations of the enemy. But there is there too human frailness, there is there still the first captivity, there is there too the law in the members fighting against the law of the mind, and willing to lead captive in the law of sin: [Romans 7:23] still the body which is corrupt presses down the soul. [Wisdom 9:15] Howsoever firm thou be by the grace of God, so long as thou still bearest an earthly vessel, wherein the treasure of God is, something must be dreaded even from that same vessel of clay. [2 Corinthians 4:7] Therefore "my firmament You are," in order that I may be firm in this world against all temptations. But if many they are, and they trouble me: "my refuge You are." For I will confess mine infirmity, to the end that I may be timid like a "hare," because I am full of thorns like a "hedgehog." And as in another Psalm is said, "The rock is a refuge for the hedgehogs and the hares:" but the Rock was Christ. [1 Corinthians 10:4]”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“in which to enter continually into that shelter, to save myself within it from the pursuer. You commanded to save me You saved me many times through Your messengers.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Be thou my strong habitation,.... This is very appropiately said, when David was driven out of his dwelling place, and palace at Jerusalem, by his son, as Kimchi observes. When God's people have no certain dwelling place, which is sometimes their case, they always find one in the Lord; particularly in his heart's love; for he that dwelleth in love dwelleth in God, Jo1 4:16; and a strong habitation he is: wherefore he is called a strong rock, a strong hold, a strong tower; he is as a wall of fire around his people, a munition of rocks; his salvation is as walls and bulwarks, and his power as a garrison in which they are kept. The psalmist adds, whereunto I may continually resort; or "may go into daily" (r), in times of danger and distress, for safety; the name of the Lord being a strong tower, whither the righteous run, and are safe, Pro 18:10; and his perfections, his power, faithfulness, lovingkindness, and unchangeableness, being as so many secret chambers, where they may enter into, and hide themselves, till calamities are over, Psa 57:1; and every day indeed for food, for comfort, for refreshment and pleasure, through communion with him; and God in Christ is always to be come at: Christ is the way of access and acceptance; and through his blood, sacrifice, and righteousness, the believer has boldness to enter into the holiest of all, and go up to the seat of God, the throne of his grace; and even to enter into him himself, who has been the dwelling place of his people in all generations, Psa 90:1; thou hast given commandment to save me; either to the ministering angels, as Aben Ezra and Kimchi interpret it, comparing it with Psa 91:11; or rather to his Son, in the council and covenant of grace and peace; when he enjoined him the salvation of his people, which he readily agreed to, and with which David was acquainted, Psa 40:7; of this command our Lord speaks, Joh 10:18; and to which he was obedient, Phi 2:8; it may respect David's salvation from present trouble, and his assurance of it, believing that the Lord had determined it, and by his mighty power would effect it; see Psa 44:4; for thou art my rock and my fortress; see Psa 18:2. (r) "ut ingrediar jugiter", Pagninus; so Junius & Tremellius, Piscator.”
Source
1849
A.D.
1774–1849
“Refuge. The parallel passage seems more complete (Calmet) in Hebrew, some letters of which may have been altered, since the time of the Septuagint. Yet the sense is nearly the same. (Berthier) — “Be thou my strong habitation, whereunto I may continually resort. Thou hast given commandment to save me; for thou art my rock and my fortress.” (Protestants) (Haydock)”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.