Mark 10:2-8

2Then some Pharisees came, and to test him they asked, “Is it lawful for a man to divorce his wife?”

3He answered them, “What did Moses command you?”

4They said, “Moses permitted a man to write a certificate of dismissal and to divorce her.”

5But Jesus said to them, “He wrote this commandment for you because of your hard hearts.

6But from the beginning of creation he made them male and female.

7For this reason a man will leave his father and mother,

8and the two will become one flesh. So they are no longer two, but one flesh.