Numbers 9:1-3

MKJV(i) 1 And Jehovah spoke to Moses in the wilderness of Sinai, in the first month of the second year after they had come out of the land of Egypt, saying, 2 Let the sons of Israel also keep the Passover at its appointed time. 3 In the fourteenth day of this month, between the evenings, you shall keep it in its appointed time. You shall keep it according to all its statutes, and according to all the ceremonies of it.