Without holiness no man will see the Lord. God’s eyes are purer than to behold evil. No unclean thing can stand in His presence, He is glorious in His nature, and holy in His commands. God will never glorify an un-sanctified person.
Hebrews 2:10 For it was fitting for Him, for whom are all things, and through whom are all things, in bringing many sons to glory, to perfect the author of their salvation through sufferings.