Matthew 19:7

⁵  And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?

⁶  Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder.

⁷  They say unto him, Why did Moses then command to give a writing of divorcement, and to put her away?

⁸  He saith unto them, Moses because of the hardness of your hearts suffered you to put away your wives: but from the beginning it was not so.

⁹  And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery.