Psalms 67:1

The composition of this psalm is such as denotes the penman's affections to have been very warm and lively, by which spirit of devotion he was elevated to receive the spirit of prophecy concerning the enlargement of God's kingdom. I. He begins with a prayer for the welfare and prosperity of the church then in being, in the happiness of which he should share, and think himself happy, Psa 67:1. Our Saviour, in teaching us to say, Our Father, has intimated that we ought to pray with and for others; so the psalmist here prays not, God be merciful to me, and bless me, but to us, and bless us; for we must make supplication for all saints, and be willing and glad to take our lot with them. We are here taught, 1. That all our happiness comes from God's mercy and takes rise in that; and therefore the first thing prayed for is, God be merciful to us, to us sinners, and pardon our sins (Luk 18:13), to us miserable sinners, and help us out of our miseries. 2. That it is conveyed by God's blessing, and secured in that: God bless us; that is, give us an interest in his promises, and confer upon us all the good contained in them. God's speaking well to us amounts to his doing well for us.

— Matthew Henry's Concise Commentary (public domain)