Revelation 5:8

And when he took the book, the four living creatures and the four and twenty elders fell down before the Lamb, having every one an harp, and golden phials full of incense, which are the prayers of the saints.

Revelation 14:2

And I heard a voice out of heaven, as the voice of many waters, and as a voice of a great thunder; and the voice which I heard was as of harpers harping on their harps.

Treasury of Scripture Knowledge

Summary

Praise the LORD with harp: sing unto him with the psaltery and an instrument of ten strings.

Bible References

Praise

Revelation 5:8
And when he took the book, the four living creatures and the four and twenty elders fell down before the Lamb, having every one an harp, and golden phials full of incense, which are the prayers of the saints.
Revelation 14:2
And I heard a voice out of heaven, as the voice of many waters, and as a voice of a great thunder; and the voice which I heard was as of harpers harping on their harps.