Acts 22:15

For thou shalt be his witness, &c. Thus the commission of the later-called Apostle was in the same terms as those in which Christ had spoken (Acts 1:8) to the eleven before his Ascension.

unto all men Paul does not utter the word "Gentiles" until he is forced to do so.

of what thou hast seen and heard For by revelation the Apostle was made aware of the whole scope of Christian truth, and of those doctrines which Christ in His life on earth had communicated to the Twelve.