Quran 17:47 — The Children of Israel (Bani Israel)

We are fully aware of what they hear, when they listen to you, and when they conspire secretly—the disbelievers say,"You are following a crazy man."

[17:46] We place shields around their minds, to prevent them from understanding it, and deafness in their ears. And when you preach your Lord, using the Quran alone,* they run away in aversion.

[17:48] Note how they describe you, and how this causes them to stray off the path.