Jn 3:15-16,36, Jn 6:40,47, Jn 11:25, Jn 20:31, Jn 17:2
The conclusion of Jesus' words is that he is the Christ. We must believe the Word. We must also believe that God sent Jesus. Only then can we gain eternal life. (Jn 5:24)
Jn 5:24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
That is, if we believe that Jesus is the only begotten Son of God and the Christ, we have eternal life. (Jn 3:15-16,36)
Jn 3:15 That whosoever believeth in him should not perish, but have eternal life. 16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. 36 He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.
The will of God, the purpose of the Bible, is that people may have eternal life by believing that Jesus is the Christ and the Son of God. (Jn 6:40,47, Jn 20:31, Jn 11:25, Jn 17:2)
Jn 6:40 And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day. 47 Verily, verily, I say unto you, He that believeth on me hath everlasting life.
Jn 20:31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.
Jn 11:25 Jesus said unto her, I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live:
Jn 17:2 As thou hast given him power over all flesh, that he should give eternal life to as many as thou hast given him.