God first sent him to the Jews at Damascus and afterwards enlarged his commission to preach to the Gentiles. And the subject he preached on was this, 'That they should repent and turn to God, and do works meet for repentance' (v. 20). A weighty and excellent subject!
"First to those in Damascus, then to those in Jerusalem and in all Judea, and then to the Gentiles, I preached that they should repent and turn to God and demonstrate their repentance by their deeds." That is identical to John the Baptist's gospel!

