In Matthew 10:28, Jesus instructs not to fear those who can kill the body but cannot kill the soul, but to fear Him who can destroy both soul and body in hell. The English word soul translates the Greek word psuche (G5590) and the Hebrew word nephesh, both meaning a living, breathing creature, whether man or animal. Soul refers to the physical life of a being and never implies something immortal within. Jesus gave His life, translated from the same Greek word as soul, as a ransom by pouring out His soul, His life's blood, in payment for sin. God has the power to destroy both the physical body and the soul, which is the life, while man can only destroy the body. In Luke 12:4-5, Jesus reiterates to fear Him who, after killing, has the power to cast into hell, the Lake of Fire, signifying the second or final death.

In John 12:25, Jesus speaks of life using two distinct Greek terms. The first is psuche (G5590), often translated as soul, which here refers to physical life. This contrasts with the second term, zoe, a noun to which the adjective eternal is attached, signifying the spiritual vitality of God. Thus, eternal life, as conveyed through zoe, embodies the quality of God's life, while psuche represents the temporal, physical existence that must be sacrificed to attain the eternal. Jesus emphasizes that he who loves his psuche will lose it, but he who hates his psuche in this world will keep it for eternal life, highlighting the need to relinquish self-centered physical life to gain the spiritual life of God.

The soul is the innermost, non-material part of a person. The Greek word is psuche, and it often indicates the heart. In Revelation 18, end-time Babylon merchandises in the bodies and souls of men because of her addiction to comfort and luxury. Babylon trades in souls as a significant aspect of her commerce before her fall, owning the souls of people and thereby enslaving the heart. This enslavement is highly relevant because Babylon constantly pulls at God's people, who are instructed to come out of her lest they share in her sins. The Feast of Unleavened Bread memorializes God's deliverance from the present evil age and the power of darkness so that His people do not become enslaved again. Babylon's trading in souls connects directly to the ongoing need to guard the heart against idolatry, covetousness, and other influences that draw it away from God, ensuring that the heart remains dedicated to Him rather than given to something else.

The Greek term *psuche* (G5590), often translated as soul, fundamentally means breath or the breath of life. It refers to a person's life, emphasizing their existence as a living, breathing being. In biblical usage, *psuche* denotes the life-force or vital principle that animates a person, distinct from the biochemical reactions of the body. This life is not inherent but is an immaterial gift from God, underscoring that a soul is one's life or being, not an immortal essence. In contrast to worldly views that confuse *psuche* with the human spirit (*pneuma*), the Bible maintains a clear distinction. *Psuche* represents life itself, while *pneuma* relates to the mind, encompassing thought, reason, and emotion. The body (*soma*) is the physical component. These three—mind, life, and body—define a human being, with *psuche* specifically tied to the concept of living existence. Regarding immortality, the soul as *psuche* is not inherently eternal. Scriptures affirm that the soul that sins shall die, indicating that life can cease. Eternal life is not an automatic possession of the soul but a gift from God, to be received through His grace. Immortality must be put on, as it is not intrinsic to *psuche*. Only God possesses inherent immortality, and He offers it to humanity as a promise to be fulfilled in the resurrection, not as a current state of the soul.

The Greek term *psuche* (G5590), often translated as "soul" or "life," carries profound significance in the context of sacrifice and devotion. It represents the essence of a person's being, the very life that one might be called to lay down for the sake of faith. In the spirit of the martyrs and heroes of faith, the willingness to surrender one's *psuche*—one's life—for God's Word and beliefs is a powerful testimony. This ultimate act of sacrifice, as exemplified by those who faced persecution and death, underscores the depth of commitment required to follow the path of righteousness, valuing God's revelation above all earthly attachments.