Matthew 19:9

Whosoever shall put away his wife. — The questions to which the law thus proclaimed gives rise have been discussed in the Note on Matthew 5:32. One serious difference has, however, to be noticed. Where in the earlier form of the precept we read, “cuseth her (the woman put away for any cause but adultery) to commit adultery,” we have here, more emphatically as bearing on the position of the husband in such a case, the statement that he by contracting another marriage “commits adultery.” The utmost that the law of Christ allows in such a case is a divorce, a mensâ et thoro, not a vinculo. The legislation which permits the complete divorce on other grounds, such as cruelty or desertion on either side, is justified, so far as it is justifiable at all, on the ground of the “hardness of heart” which makes such a concession necessary. It is interesting to compare St. Paul’s treatment of cases which the letter of this command did not cover, in 1 Corinthians 7:10.