John 6:60
Many therefore of his disciples, when they had heard this, said, This is a hard saying; who can hear it?
John 6:66
From that time many of his disciples went back, and walked no more with him.
Matthew 11:6
And blessed is he to whom I shall not be the cause of his falling into sin.
John 6:41-42
The Jews then murmured at him, because he said, I am the bread which came down from heaven.
John 8:31
Then said Jesus to those Jews who believed on him, If ye continue in my word, ye are my disciples indeed;
John 8:43
Why do ye not understand my speech? even because ye cannot hear my word.
Hebrews 5:11
Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.
2 Peter 3:16
As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, to their own destruction.