Matthew 19:8
He saith unto them, Moses because of the hardness of your hearts suffered you to put away your wives: but from the beginning it was not so.
Cross-references
Matthew 5:32 already states Jesus' teaching on divorce except for sexual immorality — here He explains why Moses allowed it.
Genesis 2:24 is the foundational marriage passage Jesus quotes just before—'one flesh' shows God's original intention, which Moses' concession deviated from.
Malachi 2:14 calls the wife a 'companion' and 'wife of thy covenant'—directly echoing Jesus' appeal to God's original design for marriage.
Mark 10:5 records the same saying: 'For the hardness of your heart he wrote you this precept'—a verbatim parallel account.
Genesis 4:19 records Lamech taking two wives—an early departure from God's 'one flesh' design, illustrating the hardness Jesus says led to divorce permissions.
1 Samuel 1:2 shows Elkanah with two wives — an example of polygamy that deviates from the 'one flesh' ideal Jesus upholds.
1 Samuel 25:43 records David taking another wife — further evidence of polygamy in Israel, illustrating the hardness of heart behind Moses' concession.
1 Chronicles 14:3 says David took more wives in Jerusalem — another polygamy example contradicting the creation ideal Jesus cites.
Jeremiah 6:16 calls people to 'ask for the old paths'—a parallel to Jesus pointing back to the original creation order over later concessions.
1 Corinthians 7:6 contrasts Paul's 'permission' with command—mirroring how Moses' divorce permission was concession, not God's ideal.