Matthew 19:9

And I say unto you - Emphasis should be laid here on the word “I.” This was the opinion of Jesus - this he proclaimed to be the law of his kingdom this the command of God ever afterward. Indulgence had been given by the laws of Moses; but that indulgence was to cease, and the marriage relation to be brought back to its original intention. Only one offence was to make divorce lawful. This is the law of God; and by the same law, all marriages which take place after divorce, where adultery is not the cause of divorce, are adulterous. Legislatures have no right to say that people may put away their wives for any other cause; and where they do, and where there is marriage afterward, by the law of God such marriages are adulterous!