4 For when one might say, “I indeed am of Paul,” but another, “I of Apollos,” are you not fleshly?
1 Corinthians 3:4 Cross References - BLB
1 Corinthians 1:12
12 Now I mean this, that each of you says, “I indeed am of Paul,” and “I of Apollos,” and “I of Cephas,” and “I of Christ.”
1 Corinthians 3:3
3 for you are still fleshly. For where jealousy and strife are among you, are you not fleshly, and are walking according to man?
1 Corinthians 4:6
6 Now I have applied these things, brothers, to myself and Apollos, on account of you, so that in us you may learn, “not beyond what has been written,” so that not one of you should be puffed up for one over the other.