John 18 NASB

"Jesus therefore said to Peter, "Put the sword into the sheath; the cup which the Father has given Me, shall I not drink it?" (John 18: 11) 

As Jesus is about to be bound and taken captive, Simon Peter tries to prevent it by pulling out his sword and cutting the ear off the high priest's slave's ear. 

However, Jesus did not long to be set free, but commanded Peter to put his sword away.  Jesus knew what He had to accomplish. It was to be taken captive like a lamb to be slaughtered and beaten for our transgressions (Isaiah 53:7-8) He also knew that the only way to receive the cup His Father gave Him, which I believe is the power to give eternal life was to be crucified and offered as a sacrifice.  

Jesus desired to die for us because He knew what awaited Him in Heaven. He knew that He would be given the cup of eternal life and power, which He could then give to us.  He deliberately stopped Peter from helping him escape and allowed them to lead Him to death. He set His mind to the things above (Colossians 3:2) ... drinking from the cup His Father gave Him. 

John 17 NASB

"They are not of the world, even as I am not of the world. Sanctify them in the truth; Thy word is truth. As Thou didst send Me into the world, I also have sent them into the world." (John 17: 16-18)

Everytime I read this passage, I feel a sense of peace knowing that Jesus Himself prays for us declaring the truth that we are not of this world.  It makes enduring and persevering through the temptations of this world that much easier.  Each time I find myself getting bothered by something of this world, I just declare this truth and tell myself over and over again that I am not of this world just as Jesus is also not of this world. And suddenly I find the strength to stomp on the obstacle/temptation of this world that I am not even a part of.  Thank You Jesus that I am not of this world, but merely IN IT temporarily until we go home to You!