Numbers 9:3-5

American Standard Version

³ In the fourteenth day of this month, ^[a]at even, ye shall keep it in its appointed season: according to all the statutes of it, and according to all the ordinances thereof, shall ye keep it. ⁴ And Moses spake unto the children of Israel, that they should keep the passover. ⁵ And they kept the passover in the first month, on the fourteenth day of the month, ^[b]at even, in the wilderness of Sinai: according to all that Jehovah commanded Moses, so did the children of Israel.