Matthew 13:15

For the heart of this people is waxed fat, and their ears are dull of hearing, and their eyes have they closed: lest at any time they should see with their eyes and hear with their ears, and understand with their hearts, and should be converted and I should heal them.

Hebrews 5:11

Concerning whom we have many things to say, and hard to be explained, seeing ye are become dull of hearing.

John 8:43-44

Why do ye not understand my discourse? Even because ye cannot hear my word.

2 Timothy 4:4

And they will turn away their ears from the truth, and turn aside to fables.

Mark 4:12

So that seeing they see, and do not perceive, and hearing they hear, and do not understand; lest at any time they should be converted, and their sins should be forgiven them.

Acts 3:19

Repent ye therefore and be converted, that your sins may be blotted out, that the times of refreshing may come from the presence of the Lord,

Acts 7:57

Then they cried with a loud voice, and stopped their ears, and rushed upon him with one accord,

2 Thessalonians 2:10-11

And with all deceiveableness of unrighteousness in them that perish, because they received not the love of the truth, that they might be saved.

2 Timothy 2:25-26

apt to teach, patient of evil, In meekness instructing those that oppose themselves; if haply God may give them repentance, to the acknowledging of the truth;

Hebrews 6:4-6

For it is impossible for those who were once inlightened, and have tasted the heavenly gift, and been made partakers of the Holy Ghost,

Revelation 22:2

In the midst of the street of it, and on either side of the river is the tree of life, bearing twelve sorts of fruits, yielding its fruit every month: and the leaves of the tree are for the healing of the nations.

Treasury of Scripture Knowledge

Summary

For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.

General references

Bible References

Ears

John 8:43
Why do ye not understand my discourse? Even because ye cannot hear my word.
Acts 7:57
Then they cried with a loud voice, and stopped their ears, and rushed upon him with one accord,
2 Timothy 4:4
And they will turn away their ears from the truth, and turn aside to fables.
Hebrews 5:11
Concerning whom we have many things to say, and hard to be explained, seeing ye are become dull of hearing.

And should be

Acts 3:19
Repent ye therefore and be converted, that your sins may be blotted out, that the times of refreshing may come from the presence of the Lord,
2 Timothy 2:25
apt to teach, patient of evil, In meekness instructing those that oppose themselves; if haply God may give them repentance, to the acknowledging of the truth;
Hebrews 6:4
For it is impossible for those who were once inlightened, and have tasted the heavenly gift, and been made partakers of the Holy Ghost,

And i

Mark 4:12
So that seeing they see, and do not perceive, and hearing they hear, and do not understand; lest at any time they should be converted, and their sins should be forgiven them.
Revelation 22:2
In the midst of the street of it, and on either side of the river is the tree of life, bearing twelve sorts of fruits, yielding its fruit every month: and the leaves of the tree are for the healing of the nations.

General references

Matthew 24:39
And knew not, till the flood came and took them all away, so shall also the coming of the Son of man be.