Contradiction with James 2:24
Acts 2:40 emphasizes salvation through faith in Jesus and repentance, while James 2:24 highlights justification by works and not faith only.
James 2:24: Ye see then how that by works a man is justified, and not by faith only.
Contradiction with John 3:16
Acts 2:40 stresses the need for repentance and escaping a perverse generation, whereas John 3:16 centers solely on belief in Jesus for eternal life, without mention of repentance.
John 3:16: For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.