What the Bible says about Jesus Gave His Life in Sacrifice
(From Forerunner Commentary)
Matthew, Mark, and Luke each record Christ praying to the Father on this fateful night, asking if He might “let this cup pass from Me.” He mentions the same “cup” in rebuking Peter's assault on Malchus: “So Jesus said to Peter, 'Put your sword into the sheath. Shall I not drink the cup which My Father has given Me?'” (John 18:11).
The image of drinking from a cup is a metaphor for His submission to the Father's will, while the cup itself stands for the enormous burden His submission would require (Luke 22:42-44). Despite desiring that some other way could be found to accomplish the payment for mankind's sins, Jesus bowed to His Father's will in the matter and gave Himself up to the arresting troops.
Martin G. Collins
The Miracles of Jesus Christ: Healing Malchus' Ear (Part Two)