A person who chooses to be influenced by the passions, desires, appetites, and senses of the flesh rather than by the promptings of the Holy Spirit. Such a person can comprehend physical things but not spiritual things. All people are carnal, or mortal, because of the fall of Adam and Eve. Each person must be born again through the atonement of Jesus Christ to cease being a natural man.

The natural man receiveth not the things of the Spirit, 1 Cor. 2: 14. The natural man is an enemy to God and should be put off, Mosiah 3: 19. He that persists in his own carnal nature remaineth in his fallen state, Mosiah 16: 5 (Alma 42: 7-24; D&C 20: 20). What natural man is there that knoweth these things? Alma 26: 19-22. Natural or carnal men are without God in the world, Alma 41: 11. Because of his transgression, man became spiritually dead, D&C 29: 41. Neither can any natural man abide the presence of God, D&C 67: 12. And man began to be carnal, sensual, and devilish, Moses 5: 13 (Moses 6: 49).