Psalm 67 explains what God is trying to accomplish in the world. That in John Piper’s argument in “Let the peoples praise you, O God! Let all the peoples praise you!” the final chapter in his book, Finish the Mission: Bringing the Gospel to the Unreached and Unengaged (John Piper & David Mathis, editors).
Piper sums up the chapter and his exposition of Psalm 67 with this statement,
God’s great purpose in the world is to be known and praised and enjoyed and feared. And the truth about him that he wants to be known and praised and enjoyed and feared is
he is the one and only true and living God, the Father of Jesus Christ;
he is infinitely just and holy in all his ways, settling all accounts justly either on the cross for believers or in hell for those who reject his truth;
he is sovereign over all the affairs of men and nations, and over the saving mission of his church through the all-authoritative, risen Christ;
and he is a God of boundless grace to all who come to him through Jesus.
The psalm also points out that we are blessed to be a blessing. Not only are we spiritually blessed, but we are also materially blessed. God doubles our blessing by making us a blessing to the rest of the world by allowing us to share the message of the gospel.
These are good truths to be reminded of during the season of the incarnation.