As I wrote previously, just knowing about Jesus isn't enough to save you from hell. You must become his and he must be your Lord and Master. It sounds extreme to our egalitarian ears but it's what Scripture says.
Furthermore, we must have a total commitment to him. It must be so complete that we must be willing to die for him if necessary.
Mark 8:34 (KJV) reads, "And when he had called the people unto him with his disciples also, he said unto them, 'Whosoever will come after me, let him deny himself, and take up his cross, and follow me.'" So if it ever comes to the point in your life that somebody wants to kill you, it's no loss but your one-way trip out of this sin-soaked world.
In fact, John MacArthur's recent radio shows have featured sermons on how death is no terror to Christians. Not only are we taken straight to heaven but we no longer have the pressure of sin nagging us every second of the day and night.
Look at what Paul wrote in 1 Corinthians 15:55 and 56 (KJV). "O death, where is thy sting? O grave, where is thy victory? The sting of death is sin; and the strength of sin is the law." Jesus beat both sin and death at his resurrection Therefore we need fear no Murderers since we do but go to meet our Lord.
You Think You're Going to Heaven? That's the title of my next book. One's eternal destination is thee most serious question in life. Make doubly sure you know where you will be after death. After all, there's no second chance after the grave to change your mind.