Revelation 2:22, 23
Revelation 2:22 NIV
So I will cast her on a bed of suffering, and I will make those who commit adultery with her suffer intensely, unless they repent of her ways.
Revelation 2:23 NIV
I will strike her children dead. Then all the churches will know that I am he who searches hearts and minds, and I will repay each of you according to your deeds.