True repentance and faith produces good fruit in one's life, often called out as and revealed in obedience, Joh 3:36, 2Th 1:8, 1Pe 4:17. Otherwise someone merely possesses pseudo faith. They hear His voice, but they don't listen, so they don't follow Him, Mat 13:13, Joh 10:27.
Don’t ever be shocked at where attacks originate from. The most devastating of all are the ones that originate from your inner circle of friends and loved ones. Jesus wasn’t surprised, so neither should you be.