Revelation 6:9-10 NIV

9 When he opened the fifth seal, I saw under1 the altar2 the souls of those who had been slain3 because of the word of God4 and the testimony they had maintained.

References for Revelation 6:9

10 They called out in a loud voice, "How long,5 Sovereign Lord,6 holy and true,7 until you judge the inhabitants of the earth8 and avenge our blood?"9

References for Revelation 6:10