Brothers, I couldn’t speak to you as to spiritual, but as to fleshly, as to babies in Messiah. I fed you with milk, not with solid food, for you weren’t yet ready. Indeed, you aren’t ready even now, for you are still fleshly. For insofar as there is jealousy, strife, and factions among you, aren’t you fleshly, and don’t you walk in the ways of men? For when one says, “I follow Paul,” and another, “I follow Apollos,” aren’t you fleshly?
-1 Corinthians 3:1-4