Lift up his countenance upon thee - i. e. especially direct His thought and care toward thee: compare 2-Kings 9:32, and similar phrases in Genesis 43:29; Genesis 44:21. Through such loving providence alone could the peace of God in which the blessing closes be given.

And the Lord lift up his countenance upon thee,.... Show his face and favour, look cheerfully on his people, declare himself well pleased with them in Christ, and appear as smiling upon them through him, indulging them with visits of love, restoring to them the joys of his salvation, and upholding them with his free Spirit; and so causing them to walk pleasantly and comfortably in the ways of God, expecting eternal life and happiness, as God's free gift through Christ:
and give thee peace; all outward needful prosperity, internal peace of mind, through the blood and righteousness of Christ, the peacemaker, and peace giver, and eternal peace in the world to come.

Lift up his countenance - That is, look upon thee with a chearful and pleasant countenance, as one that is well pleased with thee and thy services. Peace - Peace with God, with thy own conscience, and with all men; all prosperity is comprehended under this word.