(Matthew 10:28) Do not be afraid of those who kill the body but cannot kill the soul. Rather, be afraid of the One who can destroy both soul and body in hell.
(Hebrews 4:12) For the word of God is alive and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joint and marrow; it judges the thoughts and attitudes of the heart.
We are made up of these three parts, a body, a soul, and a spirit. Our first scripture from Matthew points out that here in the physical world only our body can be killed,but in the spiritual world we can lose our souls in hell, and God alone has power over our souls.
I think that these words from Jesus are given to help us understand the difference in the temporal world verses the eternal world. Think of it. The short time we spend here compared to the never ending of eternity. God has placed the choose of what will happen to our souls in our hands. Jesus’ words expose the reality of Just living our lives here and forgetting the eternity to come. Placing all our hopes in these few years here on earth can lead to our eternal demise.
Our body is confined to the physical world. Our soul and spirit live on after our body dies. The second scripture from Hebrews uses the word “even” with the idea of dividing soul and spirit. I surmise that soul and spirit are closely connected because they would be difficult to separate. From this point on I don’t have much understanding about the difference between soul and spirit. I do know that the soul contains the essence of who we are, and Jesus died to save our souls from hell. As to our spirit, the Bible refers to the spirit of man but doesn’t seem to give details.
What will it be like in eternity and what we will be like when we get there? Leaving the body and still existing, this is a great mystery. God loves us. All we need to do is to put our body, soul and spirit in his hands.