Luke
Acts 9:13ESV·traditional attribution

But Ananias answered, “Lord, I have heard from many about this man, how much evil he has done to your saints at Jerusalem.

John Calvin Reformed @genevareformer

13. Lord, I have heard. In that Ananias objecteth the danger to the Lord, he betrayeth his weakness of faith therein. Therefore we see that the saints and servants of God are afraid of death, which thing keepeth them back from doing their duty; yea, it causeth them sometimes to stagger.

Matthew Henry Presbyterian @wholebiblehenry

As for God, his work is perfect; if he begin, he will make an end: a good work was begun in Saul, when he was brought to Christ's feet, in that word, Lord, what wilt thou have me to do? And never did Christ leave any that were brought to that. Though Saul was sadly mortified when he lay three days blind, yet he was not abandoned.

Commenting on Acts 9:10-22

John Gill Reformed Baptist @doctorgill

Then Ananias answered, Lord,.... Though Ananias knew that it was the Lord that spoke, and acknowledged his power and dominion, and expressed his readiness to obey his commands; yet there was a timidity in him, and which was the more inexcusable, that it should appear after the Lord had told him of the vision which Saul had had of him; and yet still he was...