Revelation 5:8

And when He had taken the book, the four living beings and the twenty-four elders fell down in front of the Lamb [i.e., to worship Him]. Each one of them held [in his hands] a harp and a golden bowl full of incense, which are the prayers of the saints [See Psa. 141:2; Rev. 8:3-4].

Revelation 14:2

And I heard a sound from heaven like the roar of much rushing water, and like the sound of loud thunder. And the sound I heard was like people playing 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 had taken the book, the four living beings and the twenty-four elders fell down in front of the Lamb [i.e., to worship Him]. Each one of them held [in his hands] a harp and a golden bowl full of incense, which are the prayers of the saints [See Psa. 141:2; Rev. 8:3-4].
Revelation 14:2
And I heard a sound from heaven like the roar of much rushing water, and like the sound of loud thunder. And the sound I heard was like people playing their harps.