Origen

“ And God has joined together these who are not two, but have become one flesh, commanding that men should not separate the church from the Lord. And he who takes heed for himself so as not to be separated, is confident as one who will not possibly be separated and says, “Who shall separate us from the love of Christ?” ”

“ But since the Apostle understands the words, “And they twain shall be one flesh,” [1] of Christ and the church, [2] we must say that Christ keeping the saying, “What God hath joined together let not man put asunder,” [3] did not put away His former wife, so to speak—that is, the former synagogue—for any other cause than that that wife committed fornication, being made an adulteress by the evil one, and along with him plotted against her husband and slew Him, saying, “Away with such a fellow from the earth, crucify Him, crucify Him.” ”