There are some people that believe they can lose their salvation.
In Proverbs it says “There is a way which seemeth right unto a man, but the end thereof is death” (Proverbs 16:25 ASV). Sometimes we think if we are good enough God will surely let us into heaven. We place way too much importance on our good works. The way that seems right to us is good works. Good works however cannot save us nor can they keep us saved. Only Gods eternal seal can keep us secure once we come into his family.