Obviously, Paul expected much better of them. When he calls them "carnal," he does not mean they are unconverted but acting as if they were unconverted. He is strongly implying they had either regressed from earlier maturity or barely left the starting blocks in growing into mature Christians. Paul uses "carnal" as a synonym of "immature" or "incomplete." Their conduct and attitude were consistent with spiritual babes. From other parts of the epistle, we know they did not have their emotions under control and went pell-mell from one trouble to another, creating division in the congregation through their lack of knowledge, experience, and character. Giving them the benefit of the doubt, they, in their almost complete self-centeredness, apparently did not know how to do things the right way.
We might say they had no common sense or wisdom. Their discernment of situations and their evaluation of what to do did not originate in a godly perspective. Consequently, they were motivated to conduct themselves in ways unbecoming of God, Christianity, and the Kingdom of God. The American Heritage College Dictionary defines wisdom as "understanding of what is true, right or lasting; insight." God's revelation provides us these very qualities and more if we follow His counsel.
John W. Ritenbaugh
The Elements of Motivation (Part Two): Vision
Dictionaries define an idol as "any object of ardent or excessive devotion or admiration." If we obey the dictates of a person, church, or some other group contrary to the direct commands of God, we are guilty of idolatry. The individual or group becomes the idol, replacing God.
Martin G. Collins
The Second Commandment
The division and confusion taking place in the Corinth church was proof to Paul that they were still following and submitting to their old nature, formed under the influence of Satan and his world. They were doing what comes naturally. They were therefore disloyal to the values of the God Family and to the Head of the church of God.
John W. Ritenbaugh
Revelation 2-3 and Works