Adam Clarke on Acts 9:6

Trembling - Under a strong apprehension of meeting the judgment he deserved.

And astonished - At the light, the thunder, and the voice.

Lord, what wilt thou have me to do? - The word Κυριε, Lord, is here to be understood in its proper sense, as expressing authority and dominion: in the 5th verse it appears to be equivalent to our word sir.

The pride of the Pharisee is now brought down to the dust; and the fury of the persecutor is not only restrained, but the lion becomes a lamb. What wilt thou have me to do? Wilt thou condescend to employ me among thy meanest servants?

Go into the city, and it shall be told thee, etc. - Jesus could have informed him at once what was his will concerning him; but he chose to make one of those very disciples whom he was going to bring in bonds to Jerusalem the means of his salvation:

1. To show that God will help man by man, that they may learn to love and respect each other.

2. That in the benevolence of Ananias he might see the spirit and tendency of that religion which he was persecuting, and of which he was shortly to become an apostle.