How do we know that Christ's sacrifice is enough for salvation?

The assurance of Christ's sacrifice being sufficient for salvation can be found throughout Scripture, particularly in Romans 5:6, which states, 'For when we were yet without strength, in due time Christ died for the ungodly.' This verse exemplifies that Christ's death was intentional and redemptive for sinners who are powerless to save themselves. Additionally, in Hebrews 10:10, we learn that we are sanctified through the offering of Christ's body once for all, indicating that His single sacrifice was fully adequate for our salvation. It is because of this complete and final act of atonement that we can rest in the truth that we are justified and secure in Him, with no further requirements for reconciliation to God.