'Miraculous' in the Bible

"Ask for a confirming sign from the Lord your God. You can even ask for something miraculous."

I will set up a [miraculous] sign among them, and from them I will send survivors to the nations: Tarshish, Pul (Put), Lud, Meshech, Tubal and Javan, to the distant islands and coastlands that have not heard of My fame nor seen My glory. And they will declare and proclaim My glory among the nations.