Acts 22:7 (KJV)

As also the high priest doth bear me witness, and all the estate of the elders: from whom also I received letters unto the brethren, and went to Damascus, to bring them which were there bound unto Jerusalem, for to be punished.

And it came to pass, that, as I made my journey, and was come nigh unto Damascus about noon, suddenly there shone from heaven a great light round about me.

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

And I answered, Who art thou, Lord? And he said unto me, I am Jesus of Nazareth, whom thou persecutest.

And they that were with me saw indeed the light, and were afraid; but they heard not the voice of him that spake to me.