Bede

Now [Moses] declares that the ashes of the victims (which ought to be taken as a great mystery) are "the sprinkled ashes of a red heifer," which (as the apostle also bears witness) sanctified "those who have been defiled, so that [their] flesh is made clean." He also understands that the sacrament of the Lord's passion, which saves us by purifying us forever, is prefigured in these ashes. …

On the Tabernacle 2.11 ↗