If anyone who believes in Jesus in John 3:15-16 are going to Heaven then how come lukewarm Christians will perish in Hell?

According to the scriptures of the Bible it claims that in John 3:15 that everyone who believes may have eternal life in him. John 3:16 For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life Then how come lukewarm Christians aren't... show more According to the scriptures of the Bible it claims that in John 3:15 that everyone who believes may have eternal life in him.

John 3:16 For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life

Then how come lukewarm Christians aren't going to Heaven?
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