Today I'm going to cover a short Psalm, Psalm 67, and give myself a break of sorts. This is a very short Psalm.
The Psalmist, speaking for the people, or the nation, asks for God's blessing. Is this just national self-righteousness? No, there is a godly motive here; that all the nations may know the ways of God and His salvation.
God be merciful to us and bless us,
And cause His face to shine upon us, Selah
That Your way may be known on earth,
Your salvation among all nations.
Let the peoples praise You, O God;
Let all the peoples praise You.
Psalm 67:1-2 NKJV
The Psalmist continues by urging the nations to worship and praise God, for He will judge all the peoples in uprightness and guide the nations. How can this happen, however, unless God's people tell the world about His marvelous works? Or, as Jesus said to the Samaritan woman, "We know what we worship, for salvation is of the Jews" (John 4:22 NKJV)
The Psalm concludes with an acknowledgment of God's blessing and that all the nations will fear Him, just as was asked for in the beginning of the Psalm.