Revelation 5:8

when he had taken the book, the four animals, and the four and twenty elders fell down before the lamb, every one of them having harps, and golden vials full of odours, which are the prayers of the saints.

Revelation 14:2

and I heard a voice from heaven, which was like the noise of many waters, or like a great thunder-clap: I heard too a sound like that of a harp, when touch'd by the hand of a musician.

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
when he had taken the book, the four animals, and the four and twenty elders fell down before the lamb, every one of them having harps, and golden vials full of odours, which are the prayers of the saints.
Revelation 14:2
and I heard a voice from heaven, which was like the noise of many waters, or like a great thunder-clap: I heard too a sound like that of a harp, when touch'd by the hand of a musician.