Deuteronomy 29:4

4But to this day athe Lord has not given you a heart to understand or eyes to see or ears to hear.

Deuteronomy 32:28-29

28 For they are a nation void of counsel,
and there is bno understanding in them.
29 cIf they were wise, they would understand this;
they would ddiscern their latter end!

Proverbs 1:22

22“How long, O esimple ones, will you love being simple?
How long will fscoffers delight in their scoffing
and fools ghate knowledge?

Isaiah 44:18

18They know not, nor do they discern, for he has shut their eyes, so that they cannot see, and their hearts, so that they cannot understand.

Mark 4:12

12 hso that

“'they imay indeed see but not perceive,
and may indeed hear but not understand,
lest they jshould turn and be forgiven.'”

Mark 8:17-21

17And kJesus, aware of this, said to them, Why are you discussing the fact that you have no bread? lDo you not yet perceive mor understand? nAre your hearts hardened? 18 oHaving eyes do you not see, and having ears do you not hear? And do you not remember? 19When I broke pthe five loaves for the five thousand, how many baskets full of broken pieces did you take up?” They said to him, “Twelve.” 20And qthe seven for the four thousand, how many baskets full of broken pieces did you take up?” And they said to him, “Seven.” 21And he said to them, Do you not yet understand?”

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