“And Bezaleel made the ark of shittim wood: two cubits and a half was the length of it, and a cubit and a half the breadth of it, and a cubit and a half the height of it:”
Cross references: : Exod. 25:10
“One cherub on the end on this side, and another cherub on the other end on that side: out of the mercy seat made he the cherubims on the two ends thereof. on the end: or, out of, etc on the other end: or, out of, etc”
Of the selfsame matter that the Mercy seat was.