Numbers 9:4-6

Evangelical Heritage Version

⁴ Moses told the Israelites to observe the Passover. ⁵ They observed the Passover on the fourteenth day of the first month, at twilight, in the Wilderness of Sinai. The Israelites did everything just as the Lord had commanded Moses.

⁶ There were some men, however, who were unclean because of contact with a dead body. So they were not able to observe the Passover on that day. They went before Moses and Aaron on that same day.