Atheism, if you dig deep into it, most people do not won’t to accept the existence of God. They rather choose to live a sinful life instead. The Bible clearly states how a Christians should live their lives and the commandments that God has given are tough to adhere. Atheist who try to avoid living a moral life, they tend to suppress the existence of God so that they are able to live in sin. But deep inside their heart, they know there is a higher being. That higher being is Jesus.
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 have everlasting life.
John 3:17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
John 3:18 He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.
John 3:19 And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
John 3:20 For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved.
What’s also interesting is, understanding Death. See the video on what happens after life.