KNIFE, KNIVES
In the early ages of the world, before that instruments of metal were formed, the eastern inhabitants used sharp stones for the purpose of cutting. Thus Zipporah took a sharp stone for the circumcision of her son. (Exodus 4:25) And Joshua, at the command of the Lord, made sharp knives for the same purpose. The margin of the Bible saith, that they were "knives of flints." (See Joshua 5:2-3) And as knives of stones were then in use, it is more than probable that the earlier ages had none formed of better materials. (Genesis 22:6)