Acts 22:19,20

“And I said, ‘Lord, they themselves know that I imprisoned and beat in every synagogue those who believed on you, and when the blood of Stephen your witness was shed, I also was standing by, and consenting, and keeping the garments of those who slew him.' ”

He pointed out that he had not received the message glibly. Indeed he had been unable to believe it, and had protested that all knew that he had persecuted those who had believed in Jesus, and that he had been standing by, consenting, when Stephen was martyred, and had even watched the coats of those who had done it. Surely then they would recognise his genuineness and listen to him? But God had assured him that what He had said was true. Jerusalem would not receive His message.