Revelation 8:1
1 Now when the Lamb opened the seventh seal there was silence in heaven for about half an hour. 2 Then I saw the seven angels who stand before God, and seven trumpets were given to them. 3 Another angel holding a golden censer came and was stationed at the altar. A large amount of incense was given to him to offer up, with the prayers of all the saints, on the golden altar that is before the throne.
Chagigah 12b
Babylonian TalmudMa’on, habitation, is where there are groups of ministering angels who recite song at night and are silent during the day out of respect for Israel, in order not to compete with their songs, as it is stated: “By day the Lord will command His kindness, and in the night His song is with me” (Psalms 42:9), indicating that the song of the angels is with God only at night.
Notes and References
"... Finally, there is a Jewish tradition that in the fifth heaven angelic servants praise God at night but become silent during the day so that the praises offered by Israel could be heard by God (b. Chagigah 12b; b. Avoda Zara 3b). A partial basis for both this Jewish tradition and Revelation 8:1 may be Psalm 65:1–2: “There will be silence before Thee, [even] praise in Zion . . . O Thou who dost hear prayer” (compare Midrash Psalm 65:1; b. Eruvin 19a; Midrash Psalm 31 on Psalm 31:18; Testament of Adam 1:11–12; 4Q405 20 II, 7). A variant of this theme is reflected in Targum Ezekiel 1:24–25, which asserts that when the guardian cherubs were in motion, they “were blessing and thanking” God, but “when they stood still, [they] became silent” in order to hear God’s revelatory word, which in the context of Ezekiel 1–2 is a pronouncement of judgment on Israel ..."
Beale, G. K., and D. A. Carson Commentary on the New Testament Use of the Old Testament (p. 2496) Baker Academic, 2007