Mark 10:5 in the King James Version
And Jesus answered and said unto them, For the hardness of your heart he wrote you this precept.
Context
4 They said, “Moses allowed a certificate of divorce to be written, and to divorce her.”
5 But Jesus said to them, “For your hardness of heart, he wrote you this commandment.
6 But from the beginning of the creation, God made them male and female.