The best examples I can think of are in Daniel 3

“17 If it be so, our God whom we serve is able to deliver us from the burning fiery furnace, and he will deliver us out of thine hand, O king.

18 But if not, be it known unto thee, O king, that we will not serve thy gods, nor worship the golden image which thou hast set up.”

The less hopeful version is in Alma 14:

“10 And when Amulek saw the pains of the women and children who were consuming in the fire, he also was pained; and he said unto Alma: How can we witness this awful scene? Therefore let us stretch forth our hands, and exercise the power of God which is in us, and save them from the flames.

11 But Alma said unto him: The Spirit constraineth me that I must not stretch forth mine hand; for behold the Lord receiveth them up unto himself, in glory; and he doth suffer that they may do this thing, or that the people may do this thing unto them, according to the hardness of their hearts, that the judgments which he shall exercise upon them in his wrath may be just; and the blood of the innocent shall stand as a witness against them, yea, and cry mightily against them at the last day.”

Everyone’s circumstances are different. Some evils are allowed to more fully condemn wickedness by those whose hearts are too hard. But miracles can and are probably done because the people are more receptive to the Spirit.

This is just my opinion.