what does the bible say?
When it comes to the immaterial side of humankind, Scripture doesn’t always provide strict definitions, so we must infer meaning from context. While soul and spirit are often used interchangeably, there are distinctions. In the Old Testament, soul translates a Hebrew term for a living being—the animate life of a person—and can describe the whole person in action or beyond death (Genesis 2:7; Psalm 16:10). The New Testament uses a parallel Greek term for life itself or the continuing person (Matthew 16:26; Revelation 6:9). Scripture calls for love of God with all the soul, meaning the entire living self (Deuteronomy 6:5; Mark 12:30).
By contrast, spirit often refers to a person’s inner, Godward capacity. God’s Spirit gives and sustains life, and the human spirit responds—or resists—Him (Job 33:4; Psalm 51:10). Apart from Christ we are spiritually dead, unable to receive the things of God, but in Christ God makes us alive to discern and worship Him (Ephesians 2:1–5; 1 Corinthians 2:14). His Spirit testifies with our spirit, confirming our adoption (Romans 8:16).
In summary, soul and spirit largely overlap but emphasize different sides of human immaterial life: the soul as the seat of life and self, and the spirit as the capacity for fellowship with God.