Mark 7:18

He said to them, "Are you thus without understanding also? Don't you perceive that whatever goes into the man from outside can't defile him,

Isaiah 28:9-10

Whom will he teach knowledge? To whom will he explain the message? Those who are weaned from the milk, and drawn from the breasts?

Jeremiah 5:4-5

Then I said, "Surely these are poor. They are foolish; for they don't know the way of Yahweh, nor the law of their God.

Matthew 15:16-17

So Jesus said, "Do you also still not understand?

Matthew 16:11

How is it that you don't perceive that I didn't speak to you concerning bread? But beware of the yeast of the Pharisees and Sadducees."

Mark 4:13

He said to them, "Don't you understand this parable? How will you understand all of the parables?

Luke 24:25

He said to them, "Foolish men, and slow of heart to believe in all that the prophets have spoken!

John 3:10

Jesus answered him, "Are you the teacher of Israel, and don't understand these things?

1 Corinthians 3:2

I fed you with milk, not with meat; for you weren't yet ready. Indeed, not even now are you ready,

Hebrews 5:11

About him we have many words to say, and hard to interpret, seeing you have become dull of hearing.

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