How do we know Christ's sacrifice at Gethsemane is significant?

In the Garden of Gethsemane, Jesus experienced profound distress as He faced the impending crucifixion, exemplified by His sweat like drops of blood. His prayer, 'if it be possible, let this cup pass from me,' indicates the immense weight of the sins He was about to bear. However, His submission to the Father's will, 'Nevertheless, not as I will, but as Thou wilt,' shows His obedience and commitment to accomplish redemption for His people. This event highlights the necessity of His sacrificial death, as He willingly absorbed the wrath due to humanity for sin, affirming His role as the substitute and Savior.