Contradiction with John 10:18
Unlike Matthew 20:18 which suggests Jesus was delivered into the hands of the chief priests and scribes, John 10:18 indicates that Jesus has the authority to lay down his life of his own accord, implying a voluntary act rather than being delivered against his will.
John 10:18: No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father.
Contradiction with Luke 24:19-20
While Matthew 20:18 gives a prophecy of Jesus being delivered to the chief priests, Luke 24:19-20 recounts that Jesus was handed over to the authorities by the people, not specifically by the chief priests and scribes as stated in Matthew.
Luke 24:19-20: And he said unto them, What things? And they said unto him, Concerning Jesus of Nazareth, which was a prophet mighty in deed and word before God and all the people: