Numbers 9:4-6

Tree of Life Version

⁴ So Moses told Bnei-Yisrael to observe Passover. ⁵ They celebrated Passover at twilight on the fourteenth day of the first month in the Sinai wilderness. In accordance with all that Adonai commanded Moses, so Bnei-Yisrael did.^[a]

⁶ However, there were some men who could not celebrate Passover because of being defiled by a dead body. So they came to Moses and Aaron on that same day,