See the notes on Acts 9:3-7.
As I made my journey - As I was on my journey.
About noon - Acts 26:13, “at mid-day.” This circumstance is omitted by Luke in his account in Acts 9: Paul mentions it as being the more remarkable since it occurred at mid-day, to show that he was not deluded by any meteoric or natural appearances, which usually occur at night.
The glory of that light - The splendor, the intense brilliancy of the light. See this and its effects explained in the notes on Acts 9:8.
6 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.
7 And I fell unto the ground, and heard a voice saying unto me,Saul, Saul, why persecutest thou me?
8 And I answered, Who art thou, Lord? And he said unto me,I am Jesus of Nazareth, whom thou persecutest.
9 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.
10 And I said, What shall I do, Lord? And the Lord said unto me,Arise, and go into Damascus; and there it shall be told thee of all things which are appointed for thee to do.
11 And when I could not see for the glory of that light, being led by the hand of them that were with me, I came into Damascus.