1.

When our son Leporius, whom for his obstinacy in error you had justly and fitly rebuked, came to us after he had been expelled by you, we received him as one afflicted for his good, whom we should, if possible, deliver from error and restore to spiritual health. For, as you obeyed in regard to him the apostolic precept, "Warn the unruly," so it was our part to obey the precept immediately annexed, "Comfort the feeble-minded, and support the weak." ¹ His error was indeed not unimportant, seeing that he neither approved what is right nor perceived what is true in some things relating to the only-begotten Son of God, of whom it is written that, "In the beginning was the Word, and the Word was with God, and the Word was God," but that when the fulness of time had come, "the Word was made flesh, and dwelt among us;" ² for he denied that God became man, regarding it as a doctrine from which it must follow necessarily that the divine substance in which He is equal to the Father suffered some unworthy change or corruption, and not seeing that he was thus introducing into the Trinity a fourth person, which is utterly contrary to the sound doctrine of the Creed and of Catholic truth. Since, however, dearly beloved and honourable brethren, he had as a fallible man" been overtaken" in this error, we did our utmost, the Lord helping us, to instruct him "in the spirit of meekness," especially remembering that when the "chosen vessel "gave this command to which we refer, he added, "Considering thyself, lest thou also be tempted,"--lest some, perchance, should so rejoice in the measure of spiritual progress as to imagine that they could no longer be tempted like other men,--and joined with it the salutary and peace-promoting sentence, "Bear ye one another's burdens, and so fulfil the law of Christ. For if a man think himself to be something, when he is nothing, he deceiveth himself." ³