Thematic Bible: Who is carnal

For by means of God's commandment [against sinning], sin found an opportunity to deceive me and [even] kill me [spiritually]. So, the law of Moses itself is holy and the commandment [against sinning] is holy and just and good. Was this [commandment] then, which was intended for my good, [actually] responsible for my [spiritual] death? Certainly not! But so that sin could be seen as [truly] sinful, it produced [spiritual] death in me through something that was good [i.e., the commandment against sinning]. This was so that, by means of the commandment [against sinning], sin could be seen as extremely sinful. read more.
For we know that the law of Moses is spiritual [i.e., from the Holy Spirit in origin and character], but I am fleshly, sold as a slave to sin. [Note: "Flesh" throughout this section refers to a person's natural inclinations to sin].

And I could not speak to you, brothers, as I would to spiritual people, but [I have to speak to you] as I would to worldly people, for you are immature children in [the fellowship of] Christ. For I fed you with milk, not with solid food [i.e., with basic fundamentals instead of more advanced teaching. See Heb. 5:12-13] because you were not able to absorb it, for you are still worldly [minded]. And since there is jealousy and quarreling among you, is that not evidence that you are [still] worldly and living like [unspiritual] people? read more.
For when one of you says, "I am a follower of Paul," and another says, "I am a follower of Apollos," are you not [acting like worldly] people?