Matthew 19:1-12
1 Now when Jesus had finished saying these things, He left Galilee and went into the part of Judea that is beyond the Jordan; 2 and large crowds followed Him, and He healed them there. 3 And Pharisees came to Jesus, testing Him and asking, “Is it lawful for a man to divorce his wife for just any reason?”
4 He replied, “Have you never read that He who created them from the beginning made them male and female, 5 and said, ‘For this reason a man shall leave his father and mother and shall be joined inseparably to his wife, and the two shall become one flesh’?
6 So they are no longer two, but one flesh. Therefore, what God has joined together, let no one separate.”
7 The Pharisees said to Him, “Why then did Moses command us to give her a certificate of divorce and send her away?”
8 He said to them, “Because your hearts were hard and stubborn Moses permitted you to divorce your wives; but from the beginning it has not been this way. 9 I say to you, whoever divorces his wife, except for sexual immorality, and marries another woman commits adultery.”
10 The disciples said to Jesus, “If the relationship of a man with his wife is like this, it is better not to marry.”
11 But He said to them, “Not all men can accept this statement, but only those to whom [the capacity to receive] it has been given. 12 For there are eunuchs who have been born that way from their mother’s womb [making them incapable of consummating a marriage]; and there are eunuchs who have been made eunuchs by men [for royal service]; and there are eunuchs who have made themselves so for the sake of the kingdom of heaven. He who is able to accept this, let him accept it.”
Mark 10:1-12
1 Getting up, He left there (Capernaum) and went to the region of Judea and beyond the Jordan; and crowds gathered around Him again and accompanied Him, and as was His custom, He once more began to teach them. 2 Pharisees came to Jesus to test Him [intending to trick Him into saying something wrong], and asked Him, “Is it lawful [according to Scripture] for a man to divorce his wife and send her away?”
3 He replied to them, “What did Moses command you?”
4 They said, “Moses allowed a man to write a certificate of divorce and to send her away.”
5 But Jesus said to them, “Because of your hardness of hearts [your callousness and insensitivity toward your wives and the provision of God] he wrote you this precept. 6 But from the beginning of creation God made them male and female.
7 For this reason a man shall leave his father and his mother [to establish a home with his wife], 8 and the two shall become one flesh; so that they are no longer two, but [are united as] one flesh. 9 Therefore, what God has united and joined together, man must not separate [by divorce].”
10 In the house the disciples began questioning Him again about this. 11 And He said to them, “Whoever divorces his wife and marries another woman commits adultery against her; 12 and if a woman divorces her husband and marries another man, she commits adultery.”
Luke 16:18-18
18 “Whoever divorces his wife and marries another commits adultery, and he who marries one who is divorced from her husband commits adultery.