And so, brothers and sisters, I could not speak to you as spiritual people, but rather as people of the flesh, as infants in Christ.
References for 1 Corinthians 3:1
I fed you with milk, not solid food, for you were not ready for solid food. Even now you are still not ready,
for you are still of the flesh. For as long as there is jealousy and quarreling among you, are you not of the flesh, and behaving according to human inclinations?
For when one says, "I belong to Paul," and another, "I belong to Apollos," are you not merely human?