Also: Make the Supreme Sacrifice.
Meaning: To give one's life for a higher cause.
John 15:13
Greater love hath no man than this, that a man lay down his life for his friends.
Hebrews 9:26
For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.
Romans 12:1
I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.