'Edge' in the Bible

“What do you mean by using this proverb concerning the land of Israel, saying,‘The fathers eat the sour grapes,But the children’s teeth are set on edge’?

Show yourself sharp, go to the right; set yourself; go to the left, wherever your edge is appointed.

“And these are the measurements of the altar by cubits (the cubit being a cubit and a handbreadth): the base shall be a cubit and the width a cubit, and its border on its edge round about one span; and this shall be the height of the base of the altar.