Question:

If I take my life to save someone I really care about or even someone I dislike or an enemy, is that suicide? wrong?

“Greater love hath no man than this, that a man lay down his life for his friends” (John 15:13).  “When we were enemies, we were reconciled to God by the death of His Son” (Romans 5:10).  So if you take a bullet or grenade to save a friend or even an enemy, you are in good company—that of the Lord Jesus Christ.  However, there is this difference: “Christ died for our sins” (1 Corinthians 15:3); that is, He paid God’s righteous penalty for our sins that we might have eternal life.  One who gives his life on the battlefield in place of another allows the one who is spared to live longer on this earth, and perhaps have an opportunity to be saved eternally.