1 Korintus 3:2

3:2 I fed you milk, ¹  not solid food, for you were not yet ready. In fact, you are still not ready,

1 Korintus 3:4

3:4 For whenever someone says, “I am with Paul,” or “I am with Apollos,” are you not merely human? ² 

[3:2]  ¹ sn Milk refers figuratively to basic or elementary Christian teaching. Paul’s point was that the Corinthian believers he was writing to here were not mature enough to receive more advanced teaching. This was not a problem at the time, when they were recent converts, but the problem now is that they are still not ready.

[3:4]  ² tn Grk “are you not men,” i.e., (fallen) humanity without the Spirit’s influence. Here Paul does not say “walking in accordance with” as in the previous verse; he actually states the Corinthians are this. However, this is almost certainly rhetorical hyperbole.