Mark 7:17
And when he was entered into the house from the people, his disciples asked him concerning the parable.
Mark 7:18
And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the man, it cannot defile him;
Matthew 13:51
Jesus saith unto them, Have ye understood all these things? They say unto him, Yea, Lord.
Matthew 13:52
Then said he unto them, Therefore every scribe which is instructed unto the kingdom of heaven is like unto a man that is an householder, which bringeth forth out of his treasure things new and old.
Matthew 15:15-17
15
Then answered Peter and said unto him, Declare unto us this parable.
16
And Jesus said, Are ye also yet without understanding?
17
Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?
Matthew 16:8
Which when Jesus perceived, he said unto them, O ye of little faith, why reason ye among yourselves, because ye have brought no bread?
Matthew 16:9
Do ye not yet understand, neither remember the five loaves of the five thousand, and how many baskets ye took up?
Luke 24:25
Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken:
1 Corinthians 3:1
And I, brethren, could not speak unto you as unto spiritual, but as unto carnal, even as unto babes in Christ.
1 Corinthians 3:2
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.
Hebrews 5:11-14
11
Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.
12
For when for the time ye ought to be teachers, ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.
13
For every one that useth milk is unskilful in the word of righteousness: for he is a babe.
14
But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.
Revelation 3:19
As many as I love, I rebuke and chasten: be zealous therefore, and repent.