How do we know that grace is sufficient for believers?

The sufficiency of grace for believers is articulated in the proclamation that Jesus Christ finished the work of salvation on the cross (John 19:30). By His sacrifice, Christ has secured redemption for His people, emphasizing that salvation is not based on individual merit but solely on faith in Him. Moreover, the picture of the high priest, clothed in filthy garments yet receiving clean raiment, serves as a representation of how believers are covered by Christ's righteousness, highlighting the ultimate assurance we have in God's grace.