Hi Johann
I only became a Christian in 2005, praise God, after in the world for 40 years and more. I may not be as verse with the scriptures as others and hence so far I am not convinced that a Christian cannot fall back into the trapping of the enemy (satan)- turn away from Christ. Thus I agree with Ron 2 about "eternity in hell" since there are some scriptures that seem to point in us that direction.
However the focus should always be on walking in the Light and having our saviour to turn to in times of crisis. The Holy Sprit always nug us in the correct direction .