Carnality

Carnality
1. Pertaining to or characterized by the flesh or the body, its passions and appetites; sensual: carnal pleasures.
2. Not spiritual; merely human; temporal; worldly: a man of secular, rather carnal, leanings.

Spirituality
1. Concern for that which is unseen and intangible, as opposed to physical or mundane.
2. Appreciation for religious values.

When speaking to the Corinthian Believers Paul said,
"1 Corinthians 3:1-3
1 And I, brethren, could not speak unto you as unto spiritual, but as unto carnal, even as unto babes in Christ.
2 I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able.
3 For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?"

And to the Hebrews that were dull of hearing.
"Hebrews 5:11-13
11 Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.
12 For when for the time ye ought to be teachers, ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.
13 For every one that useth milk is unskilful in the word of righteousness: for he is a babe."

Everyone as a believer has a responsability to "walk as men." that is to say not as a child. We have a responsability to grow, not to tred water as the Corinthians did.
"1 Corinthians 13:11
11 When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things."

God does not give us the option to stay spiritual infants. Let's put away childish things, shall we?

"Hebrews 5:14
14 But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil."

"Full Age"
Complete (in various applications of labor, growth, mental and moral character, etc.)From Strongs G5046.