Revelation 5:9-14

And they sing a new song, saying, Thou art worthy to take the book, and to open its seals; for thou wast slain, and hast redeemed to God by thy blood men out of every tribe and tongue and people and nation,

Revelation 19:1-6

After these things I heard as it were a loud voice of a great multitude in heaven, saying, Hallelujah I The salvation, and the glory, and the power, belong to our God;

Treasury of Scripture Knowledge

Summary

Praise ye the LORD: for it is good to sing praises unto our God; for it is pleasant; and praise is comely.

Bible References

And praise

Revelation 5:9
And they sing a new song, saying, Thou art worthy to take the book, and to open its seals; for thou wast slain, and hast redeemed to God by thy blood men out of every tribe and tongue and people and nation,
Revelation 19:1
After these things I heard as it were a loud voice of a great multitude in heaven, saying, Hallelujah I The salvation, and the glory, and the power, belong to our God;