"Truly, truly I say to you, he who hears My word, and believes Him who sent Me, has eternal life, and does not come into judgment, but has passed out of death into life." ( John 5:24)

"This is the work of God, that you believe in Him whom He has sent." ( John 6:29)

"I am the resurrection and the life; he who believes in Me shall live even if he dies, and everyone who lives and believes in Me shall never die. Do you believe this?" ( John 11:25-26)

"For God so loved the world, that He gave His only begotten Son, that whoever believes in Him should not perish, but have eternal life." ( John 3:16)

"I have come as light into the world, that everyone who believes in Me may not remain in darkness." ( John 12:46)

Helpful links to related questions/topics

Brief Life Summary: Who Was Jesus Christ? Jesus the Liar, Lunatic or Lord A Lamp on a Stand Claims of Jesus about Himself Fresh Start/Forgiveness Eyewitnesses Describe Jesus I am the Source of Eternal Life - Jesus