1 Samuel 14:14-15

MKJV(i) 14 And this was the first blow, when Jonathan and his armor-bearer struck about twenty men in about half of a furrow of an acre of a field. 15 And there was trembling in the army, in the field, and among all the people. The garrison and the spoilers also trembled, and the earth quaked, and it was a very great trembling.