Hebrews 5:11
We have much to say about this, but it is difficult to explain because you have become too lazy to understand.
2 Peter 3:16
He speaks about this subject in all his letters. Some things in them are hard to understand, which ignorant and unstable people distort, leading to their own destruction, as they do the rest of the Scriptures.
Matthew 13:15
for this people's heart has become dull, and their ears are hard of hearing. They have shut their eyes so that they might not see with their eyes, and hear with their ears, and understand with their heart and turn, and I would heal them.'
Isaiah 6:10
Dull the mind of this people, deafen their ears, and blind their eyes. By doing so, they won't see with their eyes, hear with their ears, understand with their minds, turn back, and be healed."
Mark 8:17-18
Knowing this, Jesus asked them, "Why are you discussing the fact that you don't have any bread? Don't you understand or perceive yet? Are your hearts hardened?
Mark 8:21
Then he asked them, "Don't you understand yet?"
Luke 24:25
Then Jesus told them, "O, how foolish you are! How slow you are to believe everything the prophets said!
John 6:6
Jesus said this to test him, because he himself knew what he was going to do.
John 16:12
"I still have a lot to say to you, but you cannot bear it now.
Acts 28:27
For this people's minds have become stupid, and their ears can barely hear, and they have shut their eyes so that they may never see with their eyes, and listen with their ears, and understand with their heart and turn and let me heal them."'
1 Kings 10:1
When the queen of Sheba heard about Solomon's reputation with the LORD, she came to test him with difficult questions.