We really need to take note of the fact that the Scripture warns the people it is written to about the danger of falling away, and being snared again by the devil.
If you believe this can't happen to a truly born again person, remember this: lots of people who thought they were truly born again have fallen away. Make every effort to make your calling and election sure, don't presume that "there is no problem". Satan is prowling around like a roaring lion, seeking whom he may devour.