'Edge' in the Bible

Then afterwards,” declares the Lord, “I will give over Zedekiah king of Judah and his servants and the people, even those who survive in this city from the pestilence, the sword and the famine, into the hand of Nebuchadnezzar king of Babylon, and into the hand of their foes and into the hand of those who seek their lives; and he will strike them down with the edge of the sword. He will not spare them nor have pity nor compassion.”’

“In those days they will not say again,‘The fathers have eaten sour grapes,And the children’s teeth are set on edge.’

But everyone will die for his own iniquity; each man who eats the sour grapes, his teeth will be set on edge.