Then Ananias answered, Lord, I have heard by many of this man, how much evil he hath done to thy saints at Jerusalem:

People's New Testament

9:13,14 Ananias answered. In view of the terrible record of Saul the fears of Ananias were not unreasonable.

Wesley's Notes

9:13 But he answered - How natural it is to reason against God.

Jamieson-Fausset-Brown Bible Commentary

13. Ananias answered, Lord, I have heard by many of this man, &c.-"The objections of Ananias, and the removal of them by the Lord, display in a very touching manner the childlike relation of the believing soul to its Redeemer. The Saviour speaks with Ananias as a man does with his friend" [Olshausen].

how much evil he hath done to thy saints-"Thy saints," says Ananias to Christ; therefore Christ is God [Bengel]. So, in Ac 9:14, Ananias describes the disciples as "those that called on Christ's name." See on [1972]Ac 7:59, 60; and compare 1Co 1:2.

Matthew Henry's Concise Commentary

9:10-22 A good work was begun in Saul, when he was brought to Christ's feet with those words, Lord, what wilt thou have me to do? And never did Christ leave any who were brought to that. Behold, the proud Pharisee, the unmerciful oppressor, the daring blasphemer, prayeth! And thus it is even now, and with the proud infidel, or the abandoned sinner. What happy tidings are these to all who understand the nature and power of prayer, of such prayer as the humbled sinner presents for the blessings of free salvation! Now he began to pray after another manner than he had done; before, he said his prayers, now, he prayed them. Regenerating grace sets people on praying; you may as well find a living man without breath, as a living Christian without prayer. Yet even eminent disciples, like Ananias, sometimes stagger at the commands of the Lord. But it is the Lord's glory to surpass our scanty expectations, and show that those are vessels of his mercy whom we are apt to consider as objects of his vengeance. The teaching of the Holy Spirit takes away the scales of ignorance and pride from the understanding; then the sinner becomes a new creature, and endeavours to recommend the anointed Saviour, the Son of God, to his former companions.