1 Corinthians 3:2-4

New Revised Standard Version, Anglicised Catholic Edition

² I fed you with milk, not solid food, for you were not ready for solid food. Even now you are still not ready, ³ for you are still of the flesh. For as long as there is jealousy and quarrelling among you, are you not of the flesh, and behaving according to human inclinations? ⁴ For when one says, ‘I belong to Paul’, and another, ‘I belong to Apollos’, are you not merely human?