Genesis 2:7, Matthew 16:25-26, John 15:13, Acts 2:41, Mt 10:28; 26:38; John 12:27, 2 Maccabees 6:30, 1 Corinthians 6:19-20; 15:44-45, and so on. Jesus promises eternal life for those who love Him and keep his commandments.

Obviously these are evidence for believing Christians and may inapplicable to atheists, agnostics, and other skeptics.