They didn’t have long. In a few days, he would be crucified; he would be gone, in fact, this would be his last, public, address to them.
This is what happens: God calls and I resist, and resist, and go on resisting. Finally, the patience of God calls time, and what happens, my heart begins to harden. My conscience troubles me, as it troubled those Jews, and I respond to it just by putting up barricades, making excuses, justifying myself as to why I can’t possibly come to Christ, and believe. Then after that, God hardens me. I have resisted, and resisted, and then I suffer judicial hardening, so that my opportunity is gone. That is what is happening to them, and that is what the Lord means here. Once that hardening, or that darkness, comes, you won’t any longer have any glimmer of spiritual need. You won’t think anything of the way of salvation. You won’t be capable of being moved by Christ dying on Calvary for sinners, and you’ll have the very faintest apprehension of future things – heaven and hell – so you won’t fear them, you won’t care.
Sadly, although this applies to unbelievers, in a sense it is the same with believers. We are saved, but we may not be living as we ought to live. We are not serving the Lord. We are not worshipping him at every reasonable opportunity. We are not seeking his guidance in the big twists and turns and major decisions of life – we are pleasing ourselves. As a result, some come to a certain point of their lives where they will never be any different from third-rate believers. By the grace and kindness of God they will still be saved, but It is almost as if they have lost all conscience about it, and can’t be touched any more. It is a very sad possibility.