The Biblical authors used two words currently translated as “soul”: “nephesh” (neh’-fesh) in the Old Testament and “psuche” (psoo-khay’) in the New Testament. These Hebrew and Greek words are used to describe many characteristics of animals and humans other than their soulish nature, so for the most part, they typically don’t tell us much about the nature of the soul. There are, however, two places in the New Testament where the word “psuche” does seem to be describing our dual nature as soulish creatures:
“And do not fear those who kill the body, but are unable to kill the soul; but rather fear Him who is able to destroy both soul and body in hell.”
2 Corinthians 5:1-8
For we know that if the earthly tent which is our house is torn down, we have a building from God, a house not made with hands, eternal in the heavens. For indeed in this house we groan, longing to be clothed with our dwelling from heaven; inasmuch as we, having put it on, shall not be found naked. For indeed while we are in this tent, we groan, being burdened, because we do not want to be unclothed, but to be clothed, in order that what is mortal may be swallowed up by life. Now He who prepared us for this very purpose is God, who gave to us the Spirit as a pledge. Therefore, being always of good courage, and knowing that while we are at home in the body we are absent from the Lord — for we walk by faith, not by sight — we are of good courage, I say, and prefer rather to be absent from the body and to be at home with the Lord.
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