Acts 9:4-8

and he fell to the ground and heard a voice saying to him, “Saul, Saul, why are you persecuting Me?”

And he said, “Who are You, Lord?” And He said, “I am Jesus whom you are persecuting,

but get up and enter the city, and it will be told to you what you must do.”

The men who traveled with him stood speechless, hearing the voice but seeing no one.

Saul got up from the ground, and though his eyes were open, he could see nothing; and leading him by the hand, they brought him into Damascus.