Who art thou, Lord? Saul was in a great consternation and doubting, whether it was God, or an angel. Jesus whom thou persecutest: though he did not intend this persecution against Christ, yet our Saviour looks upon the good or evil done unto his members as done unto himself. It is hard for thee to kick against the pricks: this kicking against the pricks is a proverbial speech, taken either from oxen or slaves, whom they used with goads to prick on to their work, which when they kicked against, or opposed themselves to, they did not hurt the goads or pricks, but themselves; so shall all persecutors find that their mischiefs recoil upon themselves; Christ and his members shall be made here glorious by it: this metaphor is common in Scripture, Deuteronomy 32:15 1 Samuel 2:29. The pricks Saul had kicked against, were the sermons and miracles of St. Stephen and others.
Related Commentaries of Acts 9:5
Acts 9:5
5 And he said, Who art thou, Lord? And the Lord said,I am Jesus whom thou persecutest: it is hard for thee to kick against the pricks.