Verse 18. - So will not we go back from thee; i.e. "we shall not go hack from thee any more." Gratitude for our deliverance will hind us fast to thy service. Quicken us (comp. Hosea 6:2). The prayer is for national rather than spiritual life - for a recovery from the destruction which has almost come upon them (ver. 16). And we will call upon thy Name; i.e. we will be faithful to thee henceforth; we will not go after other gods, but "call upon" thee, and thee only. The poet makes himself the spokesman of the whole nation.

80:17-19 The Messiah, the Protector and Saviour of the church, is the Man of God's right hand; he is the Arm of the Lord, for all power is given to him. In him is our strength, by which we are enabled to persevere to the end. The vine, therefore, cannot be ruined, nor can any fruitful branch perish; but the unfruitful will be cut off and cast into the fire. The end of our redemption is, that we should serve Him who hath redeemed us, and not go back to our old sins.So will not we go back from thee,.... From thy fear, as the Targum; or from thy service, as Kimchi; doing as above would encourage them to stand before the Lord, and worship him; which they could not do, if he marked their sins, and demanded satisfaction from them for them; but if he looked to his Son and their surety, and took it from him, this would encourage their faith and hope, and give them boldness in his presence, and attach them to his service:

quicken us, and we will call upon thy name; the people of God are sometimes dead and lifeless in their frames, and in the exercise of grace and discharge of duty, and have need of the quickening influences of the Spirit and grace of God; and which are necessary to a fervent calling upon the name of the Lord in prayer, and without which none will stir up themselves so to do. Kimchi interprets this of quickening, or of raising to life, from the death of the captivity; and so Abarbinel, who thinks also that it respects the resurrection of the dead in the times of the Messiah.