Tertullian

If, however, you deny that divorce is in any way permitted by Christ, how is it that you on your side destroy marriage, not uniting man and woman, nor admitting to the sacrament of baptism and of the eucharist those who have been united in marriage anywhere else, unless they should agree together to repudiate the fruit of their marriage, and so the very Creator Himself? Well, then, what is a husband to do in your sect, if his wife commit adultery? Shall he keep her? But your own apostle, you know, does not permit "the members of Christ to be joined to a harlot." Divorce, therefore, when justly deserved, has even in Christ a defender.