Each person has a never dying soul. Jesus warns us not to neglect our eternal destiny by placing our focus on that which will lead to destruction.

Matthew 6:26

26 Look at the birds of the air: they neither sow nor reap nor gather into barns, and yet your heavenly Father feeds them. Are you not of more value than they?

(ESV)

Mark 8:34–36

34 And calling the crowd to him with his disciples, he said to them, “If anyone would come after me, let him deny himself and take up his cross and follow me. 35 For whoever would save his life¹ will lose it, but whoever loses his life for my sake and the gospel’s will save it. 36 For what does it profit a man to gain the whole world and forfeit his soul?

Footnotes

[1] 8:35 The same Greek word can mean either soul or life, depending on the context; twice in this verse and once in verse 36 and once in verse 37

(ESV)