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In John 12:37–43, we encounter one of the most sobering moments in the Gospel of John. Despite witnessing the miracles of Jesus and hearing His teaching, many people still refused to believe.

Why?

In this episode of The Isaiah 43 Podcast, we explore the deeper reasons behind unbelief. Scripture reveals that the problem is not a lack of evidence—it is the condition of the human heart.

John points us back to the prophet Isaiah and shows us the reality of spiritual blindness, judicial hardening, and humanity’s total inability apart from the grace of God. But this passage also reveals something profoundly comforting: if anyone believes the gospel, it is because God has graciously opened their eyes.