On to Jerusalem: Paul’s trip to Jerusalem was opposed by fellow Christians, who warned him of the dangers facing Paul. But he was firm. In Jerusalem, he faced Jews who believed in God but did not know about God’s acceptance of gentiles.
13 Then Paul answered, “Why are you weeping and breaking my heart? I am ready not only to be bound, but also to die in Jerusalem for the name of the Lord Jesus.”
Acts 21-23: Witness to the Jews
It could have been confusing situations. His plan of trip to Jerusalem was opposed by fellow Christians. In Jerusalem, he faced fellow Jews some of whom even believed in Jesus but still insisted on following the Mosaic law only and did not accept the Gentiles. But, led by the Holy Spirit and thus fully informed of the truth, Paul knew exactly what to do and what to say.