Revelation 5:9-14

And they sang a new song, saying, "Worthy are you to take the scroll and to open its seals; for you were slain, and with your blood purchased men for God from every tribe and tongue and people and nation.

Revelation 19:1-6

After this I heard what sounded like the loud voice of a great multitude in heaven, crying, "Hallelujah! Salvation and glory and 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 sang a new song, saying, "Worthy are you to take the scroll and to open its seals; for you were slain, and with your blood purchased men for God from every tribe and tongue and people and nation.
Revelation 19:1
After this I heard what sounded like the loud voice of a great multitude in heaven, crying, "Hallelujah! Salvation and glory and power belong to our God,