The Bible teaches us that once we have been saved, we can not lose this
salvation. Romans 8:38-39 says:

"For I am convinced that neither death nor life, neither angels nor
demons, neither the present nor the future, nor any powers, neither
height nor depth, nor anything else in all creation, will be able to
separate us from the love of God that is in Christ Jesus our Lord."

Some people view salvation in this way: that as long as we continue to
hold onto the Lord, we are saved, but the moment we let go or slip (by
sinning) we are lost again. This is not what the Bible teaches. Jesus
says in John 10:28-30:

"I give them eternal life, and they shall never perish; no one can
snatch them out of my hand. My Father, who has given them to me, is
greater than all; no one can snatch them out of my Father's hand."

We do not hold onto God, rather He is holding onto us. There is no sin
nor person who can snatch us out of the hands of God, and that even
includes ourselves. We can stand secure in our salvation, that it will
never be lost. Does this mean that we have the freedom to sin and do
what we want? The person who has truly been born again will want to obey
and please the Lord. Therefore when that person sins, they will feel
conviction and will repent and ask for forgiveness. God promises to
forgive us and purify us from all unrighteousness:

"If we confess our sins, He is faithful and just and will forgive us our
sins and purify us form all unrighteousness." 1 John 1:9

http://www.prophecytalk.com/index.php?topic=566.0

Brandon