Christianity was never intended to be made up of mindless and robotic men and women. People can come to different conclusions without being sinful in doing so.
God knows everything, but this does not eliminate man’s responsibility to confess his sins. Failure to do so forfeits God’s practical forgiveness.
Most people view sin as a private or earthy matter. Yet, every sin is against the Lord. In truth, men can sin against the Father, the Son, and the Spirit.
