Albert Barnes' Notes on the Whole Bible - Hebrews 9:5
And over it - That is, over the ark.The cherubim of glory - A Hebrew mode of expression, meaning “the glorious cherubim.” The word “cherubim” is the Hebrew form of the plural, of which cherub is the singular. The word “glory” used here in connection with “cherubim,” refers to the splendor, or magnificence of the image, as being carved with great skill, and covered with gold. There were two cherubim on the ark, placed on the lid in such a manner that their faces looked inward toward each other,... read more
The Pulpit Commentary - Hebrews 9:4-5
The ark of the covenant, a symbol of redemptive truth. "The ark of the covenant overlaid round about with gold, wherein … were the tables of the covenant; and over it the cherubims of glory shadowing the mercy-seat." Jewish solemnities were types of Christian truths and relations. The furniture of their sacred courts possessed symbolical significance. Their religious institutions were parables of spiritual and saving truths. Deep significance of this kind attached to the ark of the... read more