Matthew 13:15

For these people's minds are dull, and their ears have difficulty hearing, and they have shut their eyes. For if this were not the case, they would perceive what they see with their eyes, and comprehend what they hear with their ears, and understand with their minds and would turn [back to God] again so I would heal them [from their sins].'

Hebrews 7:25

So, He is also able to save completely those people who approach God through Him, since He lives forever to intercede [i.e., to plead to God] on their behalf.

Treasury of Scripture Knowledge

Summary

Behold, the LORD'S hand is not shortened, that it cannot save; neither his ear heavy, that it cannot hear:

That it cannot save

His ear

General references

Bible References

That it cannot save

Hebrews 7:25
So, He is also able to save completely those people who approach God through Him, since He lives forever to intercede [i.e., to plead to God] on their behalf.

His ear

Matthew 13:15
For these people's minds are dull, and their ears have difficulty hearing, and they have shut their eyes. For if this were not the case, they would perceive what they see with their eyes, and comprehend what they hear with their ears, and understand with their minds and would turn [back to God] again so I would heal them [from their sins].'

General references

Mark 6:5
And He could not perform any supernatural deed there [i.e., because of their lack of faith in Him], except He placed hands on a few sick people [i.e., accompanied by prayer ?] and healed them.