Zechariah 3:9

3:9 As for the stone I have set before Joshua – on the one stone there are seven eyes. I am about to engrave an inscription on it,’ says the Lord who rules over all, ‘to the effect that I will remove the iniquity of this land in a single day.

Revelation 8:2

8:2 Then I saw the seven angels who stand before God, and seven trumpets were given to them.