The Church, says St. Paul, is “built upon the foundation of the Apostles,”(70) so that the doctrine which it propagates must be based on Apostolic teachings. Hence St. Paul says to the Galatians: “Though an angel from heaven preach a Gospel to you beside that which we have preached to you, let him be anathema.”(71) The same Apostle gives this admonition to Timothy: “The things which thou hast heard from me before many witnesses the _same_ commend to faithful men who shall be fit to teach others also.”(72) Timothy must transmit to his disciples only such doctrines as he heard from the lips of his Master. Not only is it required that ministers of the Gospel should conform their teaching to the doctrine of the Apostles, but also that these ministers should be ordained and commissioned by the Apostles or their legitimate successors. “Neither doth any man,” says the Apostle, “take the honor to himself, but he that is called by God, as Aaron was.”(73) This text evidently condemns all self-constituted preachers and reformers; for, “how shall they preach, unless they be sent?”(74) _Sent_, of course, by legitimate authority, and not directed by their own caprice. Hence, we find that those who succeeded the Apostles were ordained and commissioned by them to preach, and that no others were permitted to exercise this function. Thus we are told that Paul and Barnabas “had ordained for them priests in every church.”(75) And the Apostle says to Titus: “For this cause I left thee in Crete, ... that thou shouldst ordain Priests in every city, as I also appointed thee.”(76) Even St. Paul himself, though miraculously called and instructed by God, had hands imposed on him,(77) lest others should be tempted by his example to preach without Apostolic warrant. To discover, therefore, the Church of Christ among the various conflicting claimants we have to inquire, first, which church teaches whole and entire those doctrines that were taught by the Apostles; second, what ministers can trace back, in an unbroken line, their missionary powers to the Apostles. The Catholic Church _alone_ teaches doctrines which are _in all respects_ identical with those of the first teachers of the Gospel. The following parallel lines exhibit some examples of the departure of the Protestant bodies from the primitive teachings of Christianity, and the faithful adhesion of the Catholic Church to them. Apostolic Church. Catholic Church. Protestant Churches. 1. Our Savior gives The Catholic Church All other Christian pre-eminence to Peter gives the primacy of communions practically over the other honor and jurisdiction deny Peter’s supremacy Apostles: “I will give to Peter and to his over the other to thee the keys of the successors. Apostles. kingdom of heaven.”(78) “Confirm thy brethren.”(79) “Feed My lambs; feed My sheep.”(80)