How do we know that Christ's death is sufficient for our sins?

The sufficiency of Christ's death for the sins of His people is evidenced by His resurrection. According to Romans 4:25, He was delivered up for our offenses and raised for our justification. His resurrection is not just a miraculous event; it is God’s confirmation that the penalty for sin has been fully paid. When Christ rose from the dead, it demonstrated that sin and death had been conquered and that the debt owed by sinners was satisfied. Thus, every believer can have assurance that Christ's work on the cross fully atones for their sins, ensuring their acceptance before God.