John 12:39

For this reason they were unable to believe--because Isaiah said again,

John 5:44

How is it possible for you to believe, while you receive glory from one another and have no desire for the glory that comes from the only God?

John 6:44

"no one can come to me unless the Father who sent me draws him; then I will raise him to life on the last day.

John 10:38

But if they are, then even if you do not believe me, at least believe the deeds, that you may know and see clearly that the Father is in me, and that I am in the Father."

2 Peter 2:14

Their very eyes are full of adultery--being eyes which never cease from sin. These men set traps to catch unstedfast souls, their own hearts being well trained in greed. They are fore-doomed to God's curse!

Treasury of Scripture Knowledge

Summary

Therefore they could not believe, because that Esaias said again,

General references

Bible References

They

John 5:44
How is it possible for you to believe, while you receive glory from one another and have no desire for the glory that comes from the only God?
John 6:44
"no one can come to me unless the Father who sent me draws him; then I will raise him to life on the last day.
John 10:38
But if they are, then even if you do not believe me, at least believe the deeds, that you may know and see clearly that the Father is in me, and that I am in the Father."
2 Peter 2:14
Their very eyes are full of adultery--being eyes which never cease from sin. These men set traps to catch unstedfast souls, their own hearts being well trained in greed. They are fore-doomed to God's curse!

General references

John 1:5
The Light shines in the darkness, and the darkness has not overpowered it.
John 9:18
The Jews, however, did not believe the statement concerning him--that he had been blind and had obtained his sight--until they called his parents and asked them,
John 10:37
If the deeds I do are not my Father's deeds, do not believe me.