A tradition delivered at Sinai remembers the day Og, king of Bashan, nearly crushed the camp of Israel under a single stone.
Og stood above the valley and measured the camp with his eye. "Three miles across," he muttered. So he walked off, found a mountain three miles wide, tore it up by the roots, and hoisted it onto his head. He intended to drop it and end the Exodus in an afternoon.
But the Holy One sent an army of ants. They swarmed the mountain and bored holes through it. The stone slipped, sagged, and dropped down around Og's neck like a collar. He tried to lift it off, but his teeth had grown out and pinned the rock against his jaw. He could not move.
The Rabbis read this into the Psalmist's line, Thou hast broken the teeth of the ungodly (Psalms 3:7). Read it, they said, as "Thou hast caused his teeth to branch out" — the very growth that trapped him.
Then Moses, ten cubits tall, took up an axe ten cubits long, leapt ten cubits into the air, and struck Og on the ankle. The giant fell.
Berakhot 54b preserves this legend. Even giants are brought down by ants and by a single honest blow.