Revelation 5:9-14

And they sung a new song, saying, Worthy art thou to take the scroll, and to open the seals of it; for thou wast slain, and hast redeemed us to God by thy blood, out of every tribe, and language, and people, and nation;

Revelation 7:10

and they cry with a loud voice, saying, Salvation to our God who sits upon the throne, and to the Lamb!

Revelation 14:3

And they sang a new song before the throne, and before the four living creatures and the elders: and none could learn the song, unless the one hundred and forty-four thousand who are redeemed from the earth.

Revelation 19:1-6

And after these things, I heard the voice as of a great multitude in heaven, saying, Hallelujah! salvation, and glory, and power, to the Lord our God;

Treasury of Scripture Knowledge

Summary

Is any among you afflicted? let him pray. Is any merry? let him sing psalms.

Bible References

Let him sing

Revelation 5:9
And they sung a new song, saying, Worthy art thou to take the scroll, and to open the seals of it; for thou wast slain, and hast redeemed us to God by thy blood, out of every tribe, and language, and people, and nation;
Revelation 7:10
and they cry with a loud voice, saying, Salvation to our God who sits upon the throne, and to the Lamb!
Revelation 14:3
And they sang a new song before the throne, and before the four living creatures and the elders: and none could learn the song, unless the one hundred and forty-four thousand who are redeemed from the earth.
Revelation 19:1
And after these things, I heard the voice as of a great multitude in heaven, saying, Hallelujah! salvation, and glory, and power, to the Lord our God;