It was the supreme sacrifice on behalf of Jehovah to use him to redeem the human race.

It was God's great love for fallen humanity that prompted him to do this; hence we read: "God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

For God sent not his Son into the world to condemn the world; but that the world through him might be saved."-- John 3:16,17.
[218]It was this truly good and truly great Man who for three and a half years went about in the earth and taught and ministered unto the people and did good unto every one and evil unto none.

All the time he was thus ministering and doing good, the scribes, Pharisees, doctors of the law and other dupes engaged in misrepresenting and persecuting the Lord, sought to kill him.

Why did they do this?
Because they were instruments of Satan, the devil .-- John 8:44.
[219]Jesus, the devil knew, was and is the great Seed of promise which God had promised to Abraham should be the redeemer and blesser of mankind.