“Where does saving faith come from?”
According to scripture, from the person being saved.
and these verses are where now
Matthew 15 He said to them, “But who do you say that I am?”
16 Simon Peter answered, “You are the Christ, the Son of the living God.”
17 And Jesus said to him, “Blessed are you, Simon Barjona, because flesh and blood did not reveal this to you, but My Father who is in heaven.