Quran 30:59 — The Romans (Al-Room)

GOD thus seals the hearts of those who do not know.

[30:58] Thus, we have cited for the people in this Quran all kinds of examples. Yet, no matter what kind of proof you present to the disbelievers, they say, "You are falsifiers."

[30:60] Therefore, you shall steadfastly persevere—for GOD's promise is the truth—and do not be intimidated by those who have not attained certainty.