Treasury of Scripture Knowledge
Then Zipporah took a sharp stone, and cut off the foreskin of her son, and cast it at his feet, and said, Surely a bloody husband art thou to me.
A sharp stone
At that time, said Yahweh unto Joshua, Make thee knives of flint, - and again circumcise the sons of Israel, a second time.
2 Samuel 16:7
And, thus, said Shimei, when he cursed, - Out! Out! thou man of bloodshed, and man of the Abandoned One!