Contradiction with John 3:16
Acts 5:31 suggests Jesus was exalted to give repentance, while John 3:16 emphasizes belief for eternal life.
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.
Contradiction with Romans 3:23-24
Acts 5:31 highlights Jesus granting repentance and forgiveness, whereas Romans 3:23-24 states justification is by grace through redemption in Christ.
Romans 3:23-24: For all have sinned, and come short of the glory of God;
Contradiction with Ephesians 2:8-9
Acts 5:31 indicates repentance is through Jesus, but Ephesians 2:8-9 attributes salvation to grace through faith, not works or repentance.
Ephesians 2:8-9: For by grace are ye saved through faith; and that not of yourselves: [it is] the gift of God: