Perhaps Luke can be forgiven his hyperbole. But it's not true in the gospel, and not true today. There are questions. We are questioning beings. If friendship with God means anything it means that we are opened to God, to the prospect of deeper and fuller life, to what we call spiritual growth, because we can and do ask our questions.
Questions can come from within.
Questions can be provoked by external events. Questions arise when things don't go according to plan. Questions form in your heart when you have set it on something that doesn't come to pass. Questions come because there is something in this world called inspiration, even revelation. There is, even though most people lack the intellectual courage to think it, there is objective truth, truth that can be mediated by inspiration of the artist or the prophet, by the searing insight of an innocent child.