"But the natural man receiveth not the things of the Spirit of God:for they are foolishness unto him: neither can he know them, because they are spiritually discerned." (1 Corinthians 2:14 KJV.)
ANSWER: He is not spiritual but wholly animal. He has a sensuous nature with its subjection to appetite and passion. In Jude 19 he is "sensual," "earthly" and "devilish." If a man is known by the company he keeps, the natural man must be a bad fellow in great need of regeneration and entire sanctification. Except in 1 Cor. 15:44 "natural" Greek "physical" is in the New Testament always used in a bad sense. The preacher is a blind guide. We fear that both he and his hearers will fall into a ditch hard to get out of.
— from Steele's Answers pp. 51, 52.