Some have thought there was a lack of harmony in the teaching of Jesus as recorded by Mark and Matthew. Mark makes the plain statement that whosoever puts away his wife and marries another commits adultery. He makes no exceptions. Matthew says, “Except it be for fornication.” There is no disagreement here. It is the prominent thought each has that makes the difference in the statements. The truth that Mark wishes to teach is that there is no just cause for a man marrying who has a divorced wife. The plain statement is if a man puts away his wife and marries another he commits adultery. There is no exception. There is no just cause for his marrying, and if he does it is adultery, no matter what may be the cause of divorcement. The truth that Matthew teaches is that there is one just cause for putting away the wife. This is a just cause for putting her away, but not for marrying again. Every one that divorces his wife, even though it be for fornication, and marries another violates Mark 10:11 and Luke 16:18. A man may put away his wife for fornication, and not transgress a single text in the Bible. Fornication is the only just cause for man to put away his wife, or the wife the husband. Some have fallen into the dangerous error of putting away the wife because the Scriptures say, “Be ye not unequally yoked together with unbelievers.” 2 Cor. 6:14. This is a wrong application of this text. No doubt but it does forbid the unmarried Christian yoking up with an unbeliever, as in 1 Cor. 7:39 the woman whose husband is dead is at liberty to marry whom she will; only in the Lord. However, it does not teach the breaking of the marriage yoke. Matthew gives the only cause. Paul says, “If any brother hath a wife that believeth not, and she be pleased to dwell with him, let him not put her away. And the woman which hath a husband that believeth not, and if he be pleased to dwell with her, let her not leave him.” 1 Cor. 7:12, 13.