Mark 10:5-9
10:5 But Jesus said to them, “He wrote this commandment for you because of your hard hearts.
10:6 But from the beginning of creation he made them male and female.
10:7 For this reason a man will leave his father and mother,
10:8 and the two will become one flesh. So they are no longer two, but one flesh.
10:9 Therefore what God has joined together, let no one separate.”