How do we know that Jesus accomplished what He was sent to do?

The assurance that Jesus accomplished what He was sent to do is rooted in various biblical affirmations. In Isaiah 55:11, God promises that His Word will not return void, indicating that all He sends out will fulfill its purpose. Jesus’s mission was to redeem a people for Himself, and His work on the cross, followed by His resurrection, serves as the foundation for our faith. The testimony of the Scriptures confirms that He accomplished salvation for sinners, fulfilling the prophecies concerning the Messiah. Furthermore, Jesus's resurrection is the ultimate declaration that His work is complete and accepted by the Father. Thus, we understand that the assurance of His accomplished work rests firmly in the proclaimed Word and the historical event of His resurrection.