Acts 22:7

I fell to the ground, and heard a voice saying to me 'Saul, Saul, why are you persecuting me?'

And then he will reply 'I tell you, as often as you failed to do it to one of these, however lowly, you failed to do it to me.'

"Why, what harm has he done?" he asked. But they kept shouting furiously: "Let him be crucified!"

though I once used to blaspheme, and to persecute, and to insult. Yet mercy was shown me, because I acted in ignorance, while still an unbeliever;

Treasury of Scripture Knowledge

And I fell unto the ground, and heard a voice saying unto me, Saul, Saul, why persecutest thou me?

The disciples, on hearing this, fell on their faces, greatly afraid.