Contradiction with Acts 2:14
Acts 12:17 states that Peter motioned with his hand for silence and shared a message quietly after escaping prison, while Acts 2:14 shows Peter standing up, raising his voice, and speaking boldly to address the crowd.
Acts 2:14: But Peter, standing up with the eleven, lifted up his voice, and said unto them, Ye men of Judaea, and all [ye] that dwell at Jerusalem, be this known unto you, and hearken to my words:
Contradiction with Matthew 28:19-20
In Acts 12:17, Peter shares specific instructions with the apostles, whereas Matthew 28:19-20 involves Jesus instructing the apostles to preach the gospel openly to all nations.
Matthew 28:19-20: Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: [teach...: or, make disciples, or, Christians of all nations]
Contradiction with Luke 8:39
Acts 12:17 shows Peter instructing some to keep quiet about his escape, contrasting with Jesus’ command in Luke 8:39 for the healed man to declare what was done for him widely.
Luke 8:39: Return to thine own house, and shew how great things God hath done unto thee. And he went his way, and published throughout the whole city how great things Jesus had done unto him.