Acts 9:4

4. "And he fell upon the earth, and heard a voice saying to him, Saul, Saul, why do you persecute me?" He not only heard this voice, but, gazing, while his eyes could endure it, into the midst of the glory, he saw distinctly the being who spoke to him. The question he heard, by the simple force of the word persecute, carried his mind forward to his bloody purpose in Damascus, and back to his bloody deeds in Jerusalem. Nor was this the only involuntary motion of his mind upon the instant; for here we must locate the additional words, "It is hard for thee to kick against the goads." This language reveals to us that Saul's conscience had not been altogether at rest during his persecutions, but that, like an unruly ox, he had been kicking against a goad, which urged him to a different course. Although he had acted ignorantly, and in unbelief, yet it was with so many misgivings, that he ever afterward regarded himself as the chief of sinners, having been the chief of persecutors. His conscience must have been instantaneously aroused by this reference to its past goadings.