Matthew Poole and continuators on Exodus 31:8

8 And the table, and his furniture, and the pure candlestick, with all his furniture, and the altar of incense:

So called by way of eminency, not onely because it was made of pure gold, and was not defiled with blood, for so some other things were, but especially to mind the Priests of their duty in keeping it neat and clean, it being more subject to defilement than other things.