Revelation 7:11
And all the angels stood round about the throne, and about the elders and the four beasts, and fell before the throne on their faces, and worshipped God,
Cross-reference
In Rev 4:6, the four living creatures are introduced around the throne, and they appear again in Rev 7:11 as part of the worship scene.
In Revelation 4:10, the twenty-four elders fall before the throne — here the angels join that same posture of worship.
In Rev 5:11-13, angels, elders, and living creatures worship the Lamb in a similar heavenly scene, matching the worship in Rev 7:11.
In Rev 11:16, the twenty-four elders fall on their faces in worship, matching the posture of the elders in Rev 7:11.
In Rev 19:4, the elders and living creatures again fall down in worship, echoing the same posture and setting as Rev 7:11.
Revelation 4:4 introduces the 24 elders who are also present here around the throne — this verse shows them now joining in worship.
Revelation 4:9 shows the four living creatures giving glory — a precursor to the combined worship of elders and angels here.
Revelation 22:9 commands worship only to God — the angels here are doing exactly that.
Psalm 97:7 commands all gods/angels to worship God — here they obey by falling before the throne.
Hebrews 1:6 commands angels to worship the Son — here they fall before the throne in worship.
Matthew 4:10 quotes the command to worship God alone — here the angels model that exclusive worship.