1 Corinthians 3:2

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

1 Corinthians 7:31

7:31 those who use the world as though they were not using it to the full. For the present shape of this world is passing away.

1 Corinthians 11:18

11:18 For in the first place, when you come together as a church I hear there are divisions among you, and in part I believe it.

1 Corinthians 13:5

13:5 It is not rude, it is not self-serving, it is not easily angered or resentful.

1 Corinthians 15:38

15:38 But God gives it a body just as he planned, and to each of the seeds a body of its own.

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.