출애굽기 25:19의 주석

ועשה כרוב אחד מקצה AND MAKE ONE CHERUB FROM ONE EXTREMITY — In order that you should not say that the preceding verse means two cherubim on each extremity, it was necessary to expressly state: “one cherub from the one extremity and one cherub from the other extremity”.

מקצה, from the center of the border in the width of the Ark so that the cherubs would be facing the sanctuary when mounted on the Ark.

מן הכפרת תעשו, “you shall make them integral parts of the Ark’s lid.” Incidentally, the cherubs constructed in Solomon’s Temple were not mounted on the Ark’s lid. (Kings I 6, 2327)

מן הכפרת FROM THE COVER itself, תעשו את הכרבים SHALL YE MAKE THE CHERUBIM — This is the explanation of: (v. 18) “of beaten work shalt thou make them” — that thou shalt make them out of the cover itself and that thou shalt not make them by themselves and afterwards join them to the cover.