These to whom Paul writes are still worldly. Division, disagreements, dissension. This is worldliness. This is the opposite of spiritual. Spiritual people are unselfish as God is unselfish, giving and giving.
Spiritual people care for others, risk themselves for others.
Spiritual people treat others right. Spirituality has to do with how we get along with others. Spiritual people seek the restore the fallen, to lift up those who have quit. But 10 of Paul's 26 uses of the word are in the last few chapters of 1 Corinthians. Quick on the heels of this conclusion, Paul iterates our next point.