Complex sentence: True, orthodox Christian Theology teaches salvation is through sincere faith in who Christ claimed to be, and that good works or obedience to the commandments are a natural byproduct of those who have already received salvation of their sole, in this life (before death).
Split into simpler sentences: True, orthodox Christian Theology teaches salvation is achieved through a sincere faith in who Christ claimed to be. Therefore, good works, or obedience to God's commandments, are a natural byproduct of those who have already received salvation of their souls in this life (before death).