Why Jesus Came to Die 2

The ransom price of this release from God's condemnation is the life of Christ. Not just his life lived, but his life given up in death. Jesus said repeatedly to his disciples, "The Son of Man is going to be delivered into the hands of men, and they will kill him" (Mark 9:31). In fact, one of the reasons Jesus loved to call himself "the Son of Man" (over sixty-five times in the Gospels) was that it had the ring of mortality about it. Men can die. That's why he had to be one. The ransom could only be paid by the Son of Man, because the ransom was a life given up in death.

The price was not coerced from him. That's the point of saying, "The Son of Man came not to be served but to serve." He needed no service from us. He was the giver, not the receiver. "No one takes [my life] from me, but I lay it down of my own accord" (John 10:18). The price was paid freely; it was not forced. Which brings us again to his love. He freely chose to rescue us at the cost of his life.

Fifty Reasons Why Jesus Came to Die - John Piper (pg 35)