Contrary to your claim that «works play no role whatsoever in getting us to
heaven, Acts 26:20 depicts the whole gospel message: «that they should repent and turn to God and demonstrate their
repentance by their deeds.»
If
repentance & believing in Jesus is the only way to
heaven,
by Gods full grace and not good deeds it is the faith Any other way, any other Jesus, any other inspired book with a message from Jesus, is a cult.