How do we know Jesus accomplished what He came to do?

The assurance that Jesus accomplished His mission is primarily rooted in His resurrection. Hebrews 9:26 states that Christ appeared once to put away sin, and the resurrection serves as God's definitive endorsement of this achievement. When Christ rose from the dead, it validated His promise of atonement and demonstrated that sin and death have been conquered. This foundational truth encourages believers, offering them hope and confidence in their salvation. The resurrection confirms that He completed what He was sent to do, as indicated by His own words that He would rise again. Therefore, the resurrection becomes the bedrock of Christian hope and assurance of salvation.