What is eternal life? It is knowing God personally , a persnal relationship with Him trough faith in Jesus Christ. John 17:3 And this is life eternal, that they might know thee the only trueGod, and Jesus Christ, whom thou hast sent. 1. Know , the True God. 2. Know , the True Son. John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but haveeverlasting life.