There's a difference between the animal brain and human mind, and that's what is talked about in Ecclesiastes 12:7, and 1 Corinthians 2:11. John 19:30 also speaks of Christ giving His spirit back to God.
Humans have a spiritual component to their makeup as the apostle Paul pointed out, "For what man knows the things of a man except the spirit of the man which is in him?" (1 Corinthians 2:11). But just what is the spirit in man?
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