Contradiction with Matthew 5:44
Jesus instructs to love enemies, contrasting with the foretold betrayal in Matthew 26:1.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Matthew 16:21
Describes that Jesus must go to Jerusalem and suffer many things, but not explicitly mention the immediate betrayal events of Matthew 26:1.
Matthew 16:21: From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day.
Contradiction with Luke 9:22
Jesus tells of suffering and rejection but emphasizes resurrection, which is not mentioned in Matthew 26:1's immediate prediction of betrayal.
Luke 9:22: Saying, The Son of man must suffer many things, and be rejected of the elders and chief priests and scribes, and be slain, and be raised the third day.