Revelation 5:8

And when he received the scroll, the four living creatures, and the twenty-four elders fell down before the Lamb, having every one harps, and golden vials full of perfumes, which are the prayers of the saints.

Revelation 8:3-4

And another angel came, and stood before the altar, having a golden censer; and there was given to him much incense, that he might present it with the prayers of all the saints, upon the golden altar which was before the throne.

Treasury of Scripture Knowledge

Summary

And said, Cornelius, thy prayer is heard, and thine alms are had in remembrance in the sight of God.

Bible References

Are

Revelation 5:8
And when he received the scroll, the four living creatures, and the twenty-four elders fell down before the Lamb, having every one harps, and golden vials full of perfumes, which are the prayers of the saints.
Revelation 8:3
And another angel came, and stood before the altar, having a golden censer; and there was given to him much incense, that he might present it with the prayers of all the saints, upon the golden altar which was before the throne.