Hesabu 8:21

Walawi wakajitakasa wenyewe na wakafua nguo zao. Kisha Aroni akawasogeza mbele za Bwana kuwa sadaka ya kuinuliwa, na kufanya upatanisho kwa ajili yao ili kuwatakasa.

And the Levites were purified, and they washed their clothes; and Aaron offered them as an offering before the LORD; and Aaron made an atonement for them to cleanse them.