John 12:39
Therefore they could not believe, for Isaiah said again,
John 5:44
Isaiah 6:9-10
And He said, “Go, and tell this people:
Keep on looking, but do not comprehend.’
Isaiah 44:18-20
They do not know, nor do they understand, for God has muddied their eyes so that they cannot see, and their hearts (minds) as well so that they cannot understand.
John 6:44
John 10:38
2 Peter 2:14
They have eyes full of adultery, constantly looking for sin, enticing and luring away unstable souls. Having hearts trained in greed, [they are] children of a curse.