There are legitimate reasons to fear death if you don’t belong to the family of God, because that means eternal separation from Him. As Hannah More said, “No man ever repented of being a Christian on his deathbed.” So if we’d rather not fear our deathbed, we must trust Jesus Christ for our salvation.
Christians have no reason to fear death. God has promised wonderful things after death for those who believe in Him.
“When the time comes for you to die, you need not be afraid, because death cannot separate you from God’s love.”
“We want to reach the kingdom of God, but we don’t want to travel by way of death. And yet there stands Necessity saying: ‘This way, please.’ Do not hesitate, man, to go this way, when this is the way that God came to you.” (St. Augustine)
“For if we have been united with [Jesus] in a death like his, we will certainly also be united with him in a resurrection like his.” (Romans 6:5)
“It is a precious thing beyond all words, especially in the hour of death, that we have a God whose nature is such that what pleases Him is not our work for Him but our need for Him.” (John Piper)
“So will it be with the resurrection of the dead. The body that is sown is perishable, it is raised imperishable; it is sown in dishonor, it is raised in glory; it is sown in weakness, it is raised in power; it is sown a natural body, it is raised a spiritual body. If there is a natural body, there is also a spiritual body.” (1 Corinthians 15:42-44)
“Not only so, but we ourselves, who have the firstfruits of the Spirit, groan inwardly as we wait eagerly for our adoption as sons, the redemption of our bodies.” (Romans 8:23)
“For while we are in this tent, we groan and are burdened, because we do not wish to be unclothed but to be clothed with our heavenly dwelling, so that what is mortal may be swallowed up by life.” (2 Corinthians 5:4)
“Death is no more than passing from one room into another. But there’s a difference for me, you know. Because in that other room I shall be able to see.” (Helen Keller)
“Jesus said to her, ‘I am the resurrection and the life. The one who believes in me will live, even though they die; and whoever lives and believes in me will never die. Do you believe this?’” (John 11:25-26)