How do we know that Christ is the only remedy for sin?

The belief that Christ is the sole remedy for sin is affirmed throughout Scripture. For instance, in Matthew 9:12, Jesus asserts, 'They that be whole need not a physician, but they that are sick.' This highlights that only those aware of their sinful condition see their need for a Savior. Christ's blood, shed on the cross, provides the necessary cleansing, as evidenced by verses like 1 John 1:7, which states, 'The blood of Jesus Christ his Son cleanseth us from all sin.' Thus, Christ fulfills the role of the Great Physician, remedying our soul sickness and affording us reconciliation with God.