God, because He is Trinity, is by nature a blessing, giving, loving Being; in fact, He is love. He is blessing.
The Psalmist in Psalm 67 pleads for the grace of blessing, and he begs for a particular blessing for a particular purpose. He prays for God to “make his face shine upon us (Selah) so that your way may be known on earth, your salvation among all nations” (Psalm 67:1-2 CSB).
The fellowship of the Trinity is the one we are welcomed into by grace through faith. The Son ever lives in the light of the Father’s smiling face, and the Spirit is the Love proceeding from each to each. The Psalmist prays for that same light to shine on us—by grace, not merit—which is a staggering thing to ask for. It’s asking for the glory Moses saw, and possibly even what he was denied.
The purpose of this request is the spread of the fame of God’s way, which is salvation across the world. Fellowship with God, like the Trinity itself, is an invitational fellowship. Others are invited to delight and share in this love, and those who accept this invitation joyfully do so. It is an eternal feedback loop of joyful love and loving delight.
The blessings of the harvest are a living enactment of the harvest of worshipers who are to be included in the radiant face of God’s love and acceptance. Through the testimony and life of those already welcomed, those who have not yet accepted the invitation are told (and retold) the glorious good news that God’s love is real and available.
In this way, Psalm 67 is perfect for Advent. The glory of the LORD shone through the angels onto the shepherds, who were told good news—gospel—of great joy for all the people. In the Incarnation, the prayer of Psalm 67 receives a resounding, “Yes!” And from that firstfruit of shepherds, a mighty harvest of innumerable people is being reaped to this day.
Let all the peoples praise you, God,
let all the peoples praise you (Psalm 67:5 CSB).
Gloria in excelsis deo!