Mark 7:18

And he said unto them, Are ye so without understanding also? Do ye not understand that anything from outside that enters into the man cannot defile him?

Isaiah 28:9-10

Whom shall he teach knowledge? and whom shall he make to understand doctrine? Those that are weaned from the milk and drawn from the breasts.

Jeremiah 5:4-5

Therefore I said, Surely these are poor; they have become foolish; for they do not know the way of the LORD nor the judgment of their God.

Matthew 15:16-17

And Jesus said, Are ye also yet without understanding?

Matthew 16:11

How is it that ye do not understand that I did not speak to you concerning bread that ye should keep yourselves from the leaven of the Pharisees and of the Sadducees?

Mark 4:13

And he said unto them, Know ye not this parable? How then will ye understand all the parables?

Luke 24:25

Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken;

John 3:10

Jesus answered and said unto him, Art thou a teacher of Israel and knowest not this?

1 Corinthians 3:2

I have fed you with milk, and not with solid food, for until now ye were not able to bear it, neither yet now are ye able.

Hebrews 5:11

Of whom we have many things to say and difficult to declare, seeing ye are hard of hearing.

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