John 6:60
Therefore many of his disciples, when they heard this, said, "This is a hard saying! Who can listen to it?"
John 6:66
At this, many of his disciples went back, and walked no more with him.
Matthew 11:6
Blessed is he who finds no occasion for stumbling in me."
John 6:41-42
The Jews therefore murmured concerning him, because he said, "I am the bread which came down out of heaven."
John 8:31
Jesus therefore said to those Jews who had believed him, "If you remain in my word, then you are truly my disciples.
John 8:43
Why don't you understand my speech? Because you can't hear my word.
Hebrews 5:11
About him we have many words to say, and hard to interpret, seeing you have become dull of hearing.
2 Peter 3:16
as also in all of his letters, speaking in them of these things. In those, there are some things that are hard to understand, which the ignorant and unsettled twist, as they also do to the other Scriptures, to their own destruction.