4 And the smoke of the incense went up with the prayers of the saints, out of the hand of the angel before God.
Revelation 8:4 Cross References - Darby
Exodus 30:1
1 And thou shalt make an altar for the burning of incense: of acacia-wood shalt thou make it;
Psalms 141:2
2 Let my prayer be set forth before thee as incense, the lifting up of my hands as the evening oblation.
Luke 1:10
10 And all the multitude of the people were praying without at the hour of incense.
Revelation 8:3
3 And another angel came and stood at the altar, having a golden censer; and much incense was given to him, that he might give [efficacy] to the prayers of all saints at the golden altar which [was] before the throne.
Revelation 15:8
8 And the temple was filled with smoke from the glory of God and from his power: and no one could enter into the temple until the seven plagues of the seven angels were completed.