The 3 wise men were genuine. Emmanuel is a genuine legitimate name for Jesus. God is with us. This establishes Jesus deity. Herod was a real person.
Angels are genuine.
The Holy Spirit is God. It is Jesus commandment that we confess our sins, for Heaven is close, Heaven is a real, and Heaven is listening. Once a person has been baptized we are to bear fruit that befits repentance. Thus salvation is based on how well we OBEY God. If you have no forgiveness, you have no salvation.