Revelation 17:6-7 NIV

6 I saw that the woman was drunk with the blood of God’s holy people, the blood of those who bore testimony to Jesus. When I saw her, I was greatly astonished.

References for Revelation 17:6

7 Then the angel said to me: “Why are you astonished? I will explain to you the mystery of the woman and of the beast she rides, which has the seven heads and ten horns.

References for Revelation 17:7