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 11:19

11:19 For there must in fact be divisions among you, so that those of you who are approved may be evident.

1 Corinthians 12:18

12:18 But as a matter of fact, God has placed each of the members in the body just as he decided.