Isaiah 12:4
and on that day you will say:
What it says
On that day they are told to give thanks, call on the LORD, and make His deeds known among the nations.
What it is doing
This verse turns salvation into proclamation.
In context
1In that day you will say: 2Surely God is my salvation; 3With joy you will draw water from the springs of salvation, 4and on that day you will say: 5Sing to the LORD, for He has done glorious things. 6Cry out and sing, O citizen of Zion,