John 17:3 (KJV) And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.

This is clear!! Get to know him!and why?

2 Thessalonians 1:8-9 (KJV) In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:
Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;

I think the word speaks for itself..and he is no respector of person..…