What does the Bible say about what Jesus accomplished at Calvary?

The Bible reveals that Jesus Christ came to do the will of God, which included offering Himself as a single perfect sacrifice for sins. Hebrews 10:9-14 articulates that Christ took away the first covenant of law through His sacrificial death, establishing a new covenant based on grace. By His one offering, He perfected forever those who are set apart for salvation, illustrating that His death was not just a possibility for salvation, but an accomplished reality that guarantees salvation for those He represented.