Mark 10:5-12

5And Jesus said to them, "Because of your hardness of heart he wrote you this commandment.

6But from the beginning of creation, 'God made them male and female.'

7'Therefore a man shall leave his father and mother and hold fast to his wife,

8and the two shall become one flesh.' So they are no longer two but one flesh.

9What therefore God has joined together, let not man separate."

10And in the house the disciples asked him again about this matter.

11And he said to them, "Whoever divorces his wife and marries another commits adultery against her,

12and if she divorces her husband and marries another, she commits adultery."