Make his face shine - This is an enhancement of the preceding benediction. "The face of God" imports not merely God's good will in general, but His active and special regard. With the "face" or "eye of the Lord accordingly is connected alike the judicial visitation of the wicked. Psalm 34:16, and His mercies to the righteous Psalm 4:6.

The Lord make his face to shine upon thee,.... Cause himself, the sun of righteousness, to arise and shine upon them, and give both spiritual light and heat unto them; grant his gracious presence, the manifestations of himself, communion with him, clearer discoveries of his love, of interest in him, and an increase of spiritual light and knowledge of his Gospel, and the truths of it, and of his mind and will:
and be gracious unto thee; by granting larger measures of grace out of his fulness, by leading more abundantly into it, and making fresh and frequent applications of it; grace is often wished for from Christ as well as from the Father.

Shine upon thee - Alluding to the shining of the sun upon the earth, to enlighten, and warm, and renew the face of it. The Lord love thee, and make thee know that he loves thee. We cannot but be happy, if we have God's love; and we cannot but be easy, if we know that we have it.