Mark 7:18
And he said to them, "Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him,
Isaiah 28:9-10
"To whom will he teach knowledge, and to whom will he explain the message? Those who are weaned from the milk, those taken from the breast?
Jeremiah 5:4-5
Then I said, "These are only the poor; they have no sense; for they do not know the way of the LORD, the justice of their God.
Matthew 15:16-17
And he said, "Are you also still without understanding?
Matthew 16:11
How is it that you fail to understand that I did not speak about bread? Beware of the leaven of the Pharisees and Sadducees."
Mark 4:13
And he said to them, "Do you not understand this parable? How then will you understand all the parables?
Luke 24:25
And he said to them, "O foolish ones, and slow of heart to believe all that the prophets have spoken!
John 3:10
Jesus answered him, "Are you the teacher of Israel and yet you do not understand these things?
1 Corinthians 3:2
I fed you with milk, not solid food, for you were not ready for it. And even now you are not yet ready,
Hebrews 5:11
About this we have much to say, and it is hard to explain, since you have become dull of hearing.
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