For Aaron and his sons shall wash their hands and their feet thereat:
We now have a fountain open for all, inexhaustible living water to wash in; it is our own fault if we remain in our filth. The priests could not offer their own cleanliness at home; they must wash at the appointed laver, and we must daily renew our repentance and apply the blood of Christ to our souls, for we daily offend and contract pollution.
AI summary
Commenting on Exodus 30:17-21
For Aaron and his sons shall wash their hands and their feet thereat. Not in it, but at it; the laver had mouths or spouts, as Ben Melech says, from whence the water flowed when the priests washed their hands and feet at it; and so Bartenora says (z) they did not wash out of the laver, but from water flowing out of it; it...
For Aaron and his sons shall wash their hands and their feet thereat: (k) Signifying that he that comes to God must be washed from all sin and corruption.