Salvation is a result of believing on Jesus Christ. Once we're saved, nothing
can separate us from the love of God. Jesus said, verily, verily, I say unto you,
he that heareth my word and believeth on him that sent me hath everlasting life
and shall not come into condemnation, but is passed from death unto life. Yet in
spite of this promise, people still wonder if they're saved. Well, doubting
your salvation can often come as a result of living a carnal life. When a
Christian remains in a backslidden state for a prolonged period of time, this can
often give rise to sinful habits and carnal thinking that can produce
uncertainty about one's salvation. The cure to this is to simply remind yourself of
the biblical truths of salvation, at which point the Bible says the Spirit
will bear witness with our spirit that we are the children of God. But another
reason why people doubt their salvation is because they've been given a false
gospel, that they have to repent of their sins and keep God's commandments in
order to confirm that they're saved, thereby leaving the recipient endlessly
chasing a perfect standard that they can never meet, leaving them wondering if
they're really safe to begin with. Link in the description for a full sermon.