21st Sunday in Ordinary Time C: Responsorial Psalm

Psalm 117:1, 2

Go out to all the world and tell the Good News.
Or:
Alleluia.

Verse 1:

Praise the LORD, all you nations;
   glorify him, all you peoples!

Verse 2:

For steadfast is his kindness toward us,
   and the fidelity of the LORD endures forever.