Mark 10:2-6

And some Pharisees came up to Jesus, testing Him, and began questioning Him whether it was lawful for a man to divorce his wife.

And He answered and said to them, “What did Moses command you?”

They said, “Moses permitted a man to write a certificate of divorce and send his wife away.”

But Jesus said to them, “Because of your hardness of heart he wrote you this commandment.

But from the beginning of creation, God created them male and female.