"By what power"

1. Acts 4: 7
     7 And when they had set them in the midst, they asked, By what power, or by what name, have ye done this?
2. 1 Ne. 18: 9
     9 And after we had been driven forth before the wind for the space of many days, behold, my brethren and the sons of Ishmael and also their wives began to make themselves merry, insomuch that they began to dance, and to sing, and to speak with much rudeness, yea, even that they did forget by what power they had been brought thither; yea, they were lifted up unto exceeding rudeness.
3. Alma 18: 20, 22
     20 And the king said: How knowest thou the thoughts of my heart? Thou mayest speak boldly, and tell me concerning these things; and also tell me by what power ye slew and smote off the arms of my brethren that scattered my flocks—
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     22 Now Ammon being wise, yet harmless, he said unto Lamoni: Wilt thou hearken unto my words, if I tell thee by what power I do these things? And this is the thing that I desire of thee.