The person who is the most danger spiritually is the one who doesn't see any need for God. They may enjoy life; they may look successful and looked up to by others. They may be moral and honest, and even outwardly religious( although only outwardly, because it hasn't touched their hearts).
Do you know people like this- even in your own family? Only God can break through the barrier of a heart that has no place for Him. That is why the most important thing you can do is to pray for them. Don't give up; God is able to do what we cannot do.
"In their case the prophecy of Isaiah is being fulfilled, which says, 'YOU WILL KEEP ON HEARING, BUT WILL NOT UNDERSTAND; YOU WILL KEEP ON SEEING, BUT WILL NOT PERCEIVE;"Matthew 13:14