John Gill's Exposition of the Whole Bible
Psalms 138:7
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 Psalms 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, Psalms 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,
Psalms 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, Isaiah 41:10.
w על אף איבי "super nasum inimicorum meorum", Montanus, Tigurine version; so Gussetius; "in faciem", Junius Tremellius, Piscator.