John 8:43

How is it that you do not understand what I say? It is because you cannot bear to listen to my Message.

John 7:17

If any one has the will to do God's will, he will find out whether my teaching is from God, or whether I speak on my own authority.

John 5:43

I have come in my Father's name, and you do not receive me; if another comes in his own name, you will receive him.

John 6:60

On hearing it, many of his disciples said: "This is harsh doctrine! Who can bear to listen to it?"

John 8:27

They did not understand that he meant the Father.

John 12:39-40

The reason why they were unable to believe is given by Isaiah elsewhere, in these words--

Acts 7:51

O! stubborn race, heathen in heart and ears, you are for ever resisting the Holy Spirit; your ancestors did it, and you are doing it still.

Romans 3:11

Not one who understands, not one who is searching for God!

Romans 8:7-8

Because to be earthly-minded is to be an enemy to God, for such a mind does not submit to the Law of God, nor indeed can it do so.

Treasury of Scripture Knowledge

Summary

Why do ye not understand my speech? even because ye cannot hear my word.

Bible References

Do

John 8:27
They did not understand that he meant the Father.
John 5:43
I have come in my Father's name, and you do not receive me; if another comes in his own name, you will receive him.
John 7:17
If any one has the will to do God's will, he will find out whether my teaching is from God, or whether I speak on my own authority.
John 12:39
The reason why they were unable to believe is given by Isaiah elsewhere, in these words--
Romans 3:11
Not one who understands, not one who is searching for God!

Ye cannot

John 6:60
On hearing it, many of his disciples said: "This is harsh doctrine! Who can bear to listen to it?"
Acts 7:51
O! stubborn race, heathen in heart and ears, you are for ever resisting the Holy Spirit; your ancestors did it, and you are doing it still.
Romans 8:7
Because to be earthly-minded is to be an enemy to God, for such a mind does not submit to the Law of God, nor indeed can it do so.

General references

Matthew 16:11
How is it that you do not see that I was not speaking about bread? Be on your guard against the leaven of the Pharisees and Sadducees."
Matthew 25:42
For, when I was hungry, you gave me no food; when I was thirsty, you gave me no drink;
John 7:17
If any one has the will to do God's will, he will find out whether my teaching is from God, or whether I speak on my own authority.
John 8:27
They did not understand that he meant the Father.
John 16:9
As to Sin, for men do not believe in me;