1 Corinthians 3:1-4 RSV

1 But I, brethren, could not address you as spiritual men, but as men of the flesh, as babes in Christ.
2 I fed you with milk, not solid food; for you were not ready for it; and even yet you are not ready,
3 for you are still of the flesh. For while there is jealousy and strife among you, are you not of the flesh, and behaving like ordinary men?
4 For when one says, "I belong to Paul," and another, "I belong to Apol'los," are you not merely men?