Acts 22:15 Meaning

13Came unto me, and stood, and said unto me, Brother Saul, receive thy sight. And the same hour I looked up upon him.

14And he said, The God of our fathers hath chosen thee, that thou shouldest know his will, and see that Just One, and shouldest hear the voice of his mouth.

15For thou shalt be his witness unto all men of what thou hast seen and heard.

16And now why tarriest thou? arise, and be baptized, and wash away thy sins, calling on the name of the Lord.

17And it came to pass, that, when I was come again to Jerusalem, even while I prayed in the temple, I was in a trance;