Parallel
Numbers 19:12
Clementine Vulgate · Berean Standard Bible
aspergetur ex hac aqua die tertio et septimo, et sic mundabitur. Si die tertio aspersus non fuerit, septimo non poterit emundari.
He must purify himself with the water on the third day and on the seventh day; then he will be clean. But if he does not purify himself on the third and seventh days, he will not be clean.