Acts 26:19-23 - I preached that they should repent

26:19,20

Paul then tells Agrippa that he was obedient to the vision. He started work immediately preaching first in Damascus, then in Jerusalem and Judea. After that he went to the Gentiles. He preached repentance, and that repentance should be demonstrated by actions. Repentance is a key part of gospel preaching, and true faith shows itself by actions. There are some who think that the letter of James is somehow offering a view that is opposed to Paul. This is utter nonsense. Paul could not conceive of faith without actions.

26:21-23

Paul was attacked by the Jews because of his preaching of the gospel, not because of any insurrection against Rome, or general trouble making. Paul was rescued by God, and he reiterates that the gospel is entirely consistent with the prophets and Moses, i.e. all of the Old Testament. Indeed the gospel is what they prophesied would happen. In particular, the Messiah would suffer, Isaiah 53 is the best example of this, but a number of Psalms foretell this as well. He would rise from the dead, and the message of salvation would go out to Jews and Gentiles.