Because these people are ignorant of the truth, and because they believe in Jesus with their mistaken knowledge attained on their own, they still remain sinful. They still have sin because they, instead of believing according to the truth hidden in the materials of the Tabernacle, have thought of their Savior on their own and made their own doctrines of salvation based on these thoughts, believing that salvation comes through their own efforts by offering prayers of repentance to God and trying to reach their incremental sanctification.