Numbers 4:13

4:13 Also, they must take away the ashes from the altar and spread a purple cloth over it.

tc The Greek text has “and he must place the cover upon the altar” instead of “and they must take away the ashes from the altar.” The verb is the Piel form; its nuance seems to be privative, i.e., stating that the object is deprived of the material – the ashes are removed. This is the main altar in the courtyard.