Numbers 9:3-5

21st Century King James Version

³ In the fourteenth day of this month at evening ye shall keep it in his appointed season. According to all the rites of it and according to all the ceremonies thereof shall ye keep it.”

⁴ And Moses spoke unto the children of Israel that they should keep the Passover.

⁵ And they kept the Passover on the fourteenth day of the first month at evening in the Wilderness of Sinai. According to all that the Lord commanded Moses, so did the children of Israel.