If I shall walk in the midst of tribulation, thou wilt quicken me: and thou hast stretched forth thy hand against the wrath of my enemies: and thy right hand hath saved me.

“"If I walk in the midst of tribulation, You shall revive me" [Psalm 138:7]. True it is: whatsoever tribulation you are in, confess, call on Him; He frees you, He revives you....Love the other life, and you shall see that this life is tribulation, whatever prosperity it shine with, whatever delights it abound and overflow with; since not yet have we that joy most safe and free from all temptation, which God reserves for us in the end, without doubt it is tribulation. Let us understand then what tribulation he means here too, brethren. Not as though he said, "If perchance there shall any tribulation have befallen me, You shall free me therefrom." But how says he? "If I walk," etc.; that is, otherwise You will not revive me, unless I walk in the midst of tribulation.”

“Though I walk in the midst of trouble,.... Trouble attends the best of men; both outward and inward trouble, from sin, Satan, and the world; yea, they are in the midst of it, surrounded with it; and it is a way in which they walk through this world, and enter the kingdom of heaven; it is continued unto them; it is a long walk, and yet will have an end; see Psa 23:4; thou wilt revive me; preserve his life amidst all his troubles, support him under them, make him cheerful and fearless; revive his work of grace in him, quicken him to the lively exercise of grace, and fervent discharge of duty: this the Lord does by his gracious presence, by the discoveries of his love, and by the application of precious promises; thou shalt stretch forth thine hand against the wrath of mine enemies; to stop and restrain it; which he can easily do, when most violent and outrageous, Psa 76:10. Or, "against the nose of mine enemies" (w); strike them on the nose, as men do unruly horses to stop them: or give a slap on their face with the left hand, as Arama observes, the right being after mentioned; and thy right hand shall save me; for that has saving strength in it, Psa 20:6. This may be understood of Christ, who is not only the man of his right hand, but is the right hand of his righteousness; by whom he saves his people with a spiritual and eternal salvation, as well as with a temporal one, Isa 41:10. (w) "super nasum inimicorum meorum", Montanus, Tigurine version; so Gussetius; "in faciem", Junius & Tremellius, Piscator.”

“Out of these experiences-so important for all mankind - of David, who has been exalted by passing through humiliation, there arise from him confident hopes concerning the future. The beginning of this strophe calls Psa 23:4 to mind. Though his way may lead through the midst of heart - oppressing trouble, Jahve will loose these bands of death and quicken him afresh (חיּה as in Psa 30:4; Psa 71:20, and frequently). Though his enemies may rage, Jahve will stretch forth His hand threateningly and tranquillizingly over their wrath, and His right hand will save him. ימינך is the subject according to Psa 139:10 and other passages, and not (for why should it be supposed to be this?) accus. instrumenti (vid., Psa 60:7). In Psa 138:8 יגמר is intended just as in Psa 57:3 : the word begun He will carry out, ἐπιτελεῖν (Phi 1:6); and בּעדי (according to its meaning, properly: covering me) is the same as עלי in that passage (cf. Psa 13:6; 142:8). The pledge of this completion is Jahve's everlasting mercy, which will not rest until the promise is become perfect truth and reality. Thus, therefore, He will not leave, forsake the works of His hands (vid., Psa 90:16.), i.e., as Hengstenberg correctly explains, everything that He has hitherto accomplished for David, from his deliverance out of the hands of Saul down to the bestowment of the promise - He will not let one of His works stand still, and least of all one that has been so gloriously begun. הרפּה (whence תּרף) signifies to slacken, to leave slack, i.e., leave uncarried out, to leave to itself, as in Neh 6:3. אל expresses a negation with a measure of inward excitement.”