Matthew 11:9 calls John a prophet and more, setting up the statement in verse 13 about all prophets prophesying until John.

In Matthew 5:17, Jesus says he came to fulfill the Law and Prophets, which Matthew 11:13 says prophesied until John.

Malachi 4:6 prophesies Elijah's coming to turn hearts—the very figure John the Baptist embodies, ending the Law and Prophets as Matthew 11:13 states.

In Luke 24:27, Jesus explains how the Law and Prophets point to him, showing their fulfillment beyond the 'until John' period in Matthew 11:13.

Luke 24:44 echoes that the Law, Prophets, and Psalms all prophesy about Christ, reinforcing the same claim about the OT pointing forward.

John 5:46 specifies that Moses wrote about Jesus, directly supporting the statement that the Law prophesied until John.

Acts 3:22-24 cites Moses and all prophets as foretelling the Messiah, directly corroborating Jesus' statement about the Law and Prophets.

Acts 13:27 shows that the prophets' words were fulfilled in Jesus' condemnation, illustrating that they prophesied of these events.

Romans 3:21 explicitly states that the Law and Prophets testify to God's righteousness, a direct theological parallel to Matthew 11:13.

Malachi 4:5 predicts Elijah's coming before the Lord's day, which Matthew identifies with John the Baptist — the endpoint of OT prophecy.