Hebrews 5:11

Concerning whom, great, is our discourse, and of difficult interpretation, to express, seeing that, slothful, have ye become in the hearing;

2 Peter 3:16

As also, in all letters, speaking in them concerning these things, - in which letters are some things, hard to be understood, which, the uninstructed and unstable, wrest, - as also the other scriptures, - unto their own destruction.

Matthew 13:15

For the heart of this people hath become dense, and, with their ears, heavily have they heard, and, their eyes, have they closed, - lest, once they should see with their eyes, and, with their ears, should hear, and, with their hearts, should understand, and return; when I would certainly heal them.

Isaiah 6:10

Stupefy thou the heart of this people, And their ears, make thou heavy, And their eyes, overspread, - Lest they see with their eyes And with their ears, should hear, And their heart should discern and come back. And they be healed.

Mark 8:17-18

And, taking note, he saith unto them - Why do ye deliberate, because ye have no, loaves? Not yet perceive ye, neither understand, - keep ye your hearts, hardened?

Mark 8:21

Not yet, do ye understand?

Luke 24:25

And, he, said unto them - O thoughtless ones! and slow in heart to rest your faith upon all things which the prophets have spoken: -

John 6:6

But, this, he was saying, to test him; for, he himself, knew, what he was about to do.

John 16:12

Yet many things, have I, unto you, to be saying, - but ye cannot bear them, just now;

Acts 28:27

For the heart of this people, hath become dense, and, with their ears, heavily, have they heard, and, their eyes, have they closed, - lest once they should see with their eyes, and, with their ears, should hear, and, with their hearts, should understand, and return, - when I would certainly heal them.

1 Kings 10:1

And, when, the queen of Sheba, heard the report of Solomon, as pertaining to the Name of Yahweh, she came to prove him, with abstruse questions.

Treasury of Scripture Knowledge

Summary

Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.

General references

Bible References

We

1 Kings 10:1
And, when, the queen of Sheba, heard the report of Solomon, as pertaining to the Name of Yahweh, she came to prove him, with abstruse questions.
John 6:6
But, this, he was saying, to test him; for, he himself, knew, what he was about to do.
John 16:12
Yet many things, have I, unto you, to be saying, - but ye cannot bear them, just now;
2 Peter 3:16
As also, in all letters, speaking in them concerning these things, - in which letters are some things, hard to be understood, which, the uninstructed and unstable, wrest, - as also the other scriptures, - unto their own destruction.

Dull

Isaiah 6:10
Stupefy thou the heart of this people, And their ears, make thou heavy, And their eyes, overspread, - Lest they see with their eyes And with their ears, should hear, And their heart should discern and come back. And they be healed.
Matthew 13:15
For the heart of this people hath become dense, and, with their ears, heavily have they heard, and, their eyes, have they closed, - lest, once they should see with their eyes, and, with their ears, should hear, and, with their hearts, should understand, and return; when I would certainly heal them.
Mark 8:17
And, taking note, he saith unto them - Why do ye deliberate, because ye have no, loaves? Not yet perceive ye, neither understand, - keep ye your hearts, hardened?
Luke 24:25
And, he, said unto them - O thoughtless ones! and slow in heart to rest your faith upon all things which the prophets have spoken: -
Acts 28:27
For the heart of this people, hath become dense, and, with their ears, heavily, have they heard, and, their eyes, have they closed, - lest once they should see with their eyes, and, with their ears, should hear, and, with their hearts, should understand, and return, - when I would certainly heal them.

General references

Leviticus 11:22
these of them, may ye eat: the swarming-locust after its kind, and the devouring locust after its kind, - and the chargol-locust after its kind, and the chagab-locust after its kind.
Mark 7:18
And he saith unto them - Thus, are, ye also, without discernment? Perceive ye not that, nothing, from without, entering into the man, can defile him;