Contradiction with Luke 16:16
While Matthew 11:13 states that the law and the prophets prophesied until John, Luke 16:16 suggests that the law and the prophets were until John, but since that time, the kingdom of God is preached, and every man presses into it, indicating a continuation rather than a cessation.
Luke 16:16: The law and the prophets [were] until John: since that time the kingdom of God is preached, and every man presseth into it.
Contradiction with Matthew 5:18
Matthew 5:18 states that not one jot or tittle will pass from the law until all is fulfilled, implying the law remains in effect, whereas Matthew 11:13 suggests that the prophets prophesied only until John.
Matthew 5:18: For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Contradiction with Romans 3:21
Romans 3:21 refers to a righteousness from God apart from the law, which implies the law's role has shifted, potentially conflicting with the idea in Matthew 11:13 that the law and prophets were complete with John.
Romans 3:21: But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets;