That is an excellent question that many people have thought about over the years.
Notice what the Bible teaches about the condition of the dead.
What happens at death is no mystery to Jehovah, the Creator of the brain. He knows the truth, and in his Word, the Bible, he explains the condition of the dead. Its clear teaching is this: When a person dies, he ceases to exist. Death is the opposite of life. The dead do not see or hear or think. Not even one part of us survives the death of the body. We do not possess an immortal soul or spirit. After Solomon observed that the living know that they will die, he wrote: “But the dead know nothing at all.” He then enlarged on that basic truth by saying that the dead can neither love nor hate and that “there is no work nor planning nor knowledge nor wisdom in the Grave.” Ecclesiastes 9:5,6,10 Similarly, Psalm 146:4 says that when a man dies, “his thoughts perish.” We are mortal and do not survive the death of our body. The life we enjoy is like the flame of a candle. When the flame is put out, it does not go anywhere. It is simply gone.
WHAT JESUS SAID ABOUT DEATH
Jesus Christ spoke about the condition of the dead. He did so with regard to Lazarus, a man whom he knew well and who had died. Jesus told his disciples: “Lazarus our friend has fallen asleep.” The disciples thought that Jesus meant that Lazarus was resting in sleep, recovering from an illness. They were wrong. Jesus explained: “Lazarus has died.” John 11:11-14 Notice that Jesus compared death to sleep. Lazarus was neither in heaven nor in a burning hell. He was not meeting angels or ancestors. Lazarus was not being reborn as another human. He was at rest in death, as though in a deep sleep without dreams. Other scriptures also compare death to sleep. For example, when the disciple Stephen was stoned to death, the Bible says that he “fell asleep.” (Acts 7:60) Similarly, the apostle Paul wrote about some in his day who had “fallen asleep in death.”—1 Corinthians 15:6.
What the Bible teaches about the condition of the dead is comforting. As we have seen, the dead do not suffer pain or heartache. There is no reason to be afraid of them, for they cannot harm us. They do not need our help, and they cannot help us. We cannot speak with them, and they cannot speak with us.
Long ago, the righteous man Job raised this question: “If a man dies, can he live again?” (Job 14:14) Can a lifeless person who is sleeping in death be brought back to life? What the Bible teaches about this is deeply comforting. Please follow this link by copying and pasting in your web browser. It will take you to jw.org to a book entitled What Can the Bible Teach Us Chapter Seven The Resurrection: Real Hope for Your Dead Loved Ones https://www.jw.org/en/publications/books/bible-teach/hope-resurrection-of-dead-loved-ones/ I hope this helps.