John 6:60
Many therefore of His disciples, when they heard it, said, "This is hard to accept. Who can listen to such teaching?"
John 6:66
Thereupon many of His disciples left Him and went away, and no longer associated with Him.
Matthew 11:6
and blessed is every one who does not stumble and fall because of my claims."
John 6:41-42
Now the Jews began to find fault about Him because of His claiming to be the bread which came down out of Heaven.
John 8:31
Jesus therefore said to those of the Jews who had now believed in Him, "As for you, if you hold fast to my teaching, then you are truly my disciples;
John 8:43
How is it you do not understand me when I speak? It is because you cannot bear to listen to my words.
Hebrews 5:11
Concerning Him we have much to say, and much that it would be difficult to make clear to you, since you have become so dull of apprehension.
2 Peter 3:16
That is what he says in all his letters, when speaking in them of these things. In those letters there are some statements hard to understand, which ill-taught and unprincipled people pervert, just as they do the rest of the Scriptures, to their own ruin.