John 6:60
So many of his disciples, when they heard it, said: "This teaching is unbelievable! Who can listen to him?"
John 6:66
Therefore many of his disciples drew back and no longer companied with him.
Matthew 11:6
"And blessed is the man who finds no cause of stumbling in me."
John 6:41-42
Then the Jews began to find fault with Jesus, because he said, "I am the bread which comes down out of heaven," and they kept asking.
John 8:31
So Jesus spoke to the Jews that believed him, saying. "If you abide in my teaching, you are my true disciples;
John 8:43
"How is it that you do not understand what I say? It is because you cannot listen to my message.
Hebrews 5:11
Concerning him I have much to say, and much that is hard to make clear to you, because you have grown dull of hearing.
2 Peter 3:16
It is the same in all his letters when he speaks of these things. There are indeed some things in his letters hard to understand, which the ignorant and the shifty wrest, as also they do the other Scriptures, to their own destruction.