1 Corinthians 3:2

I have fed you with milk, not with meat; for you were not yet able. But ye are not now yet able:

John 16:12

I have many things to say to you, but you are not able to bear them now.

1 Peter 2:2

like newly born babes, desire the pure milk of the word, in order that you may grow thereby unto salvation:

Hebrews 5:11-14

Concerning whom there is much word to us, and difficult to speak, since you are dull of hearing.

Treasury of Scripture Knowledge

Summary

I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able.

General references

Bible References

Fed

Hebrews 5:12
For indeed you, who ought to be teachers so far as time is concerned, have need that some one again teach you what are the rudiments of the beginning of the oracles of God; and you have need of milk, not solid food.
1 Peter 2:2
like newly born babes, desire the pure milk of the word, in order that you may grow thereby unto salvation:

General references

Mark 7:18
And He says to them, Are you still without understanding? Do you not know that everything external entering into a man is not able to defile him?