Numbers 9:1-3

VIN(i) 1 the LORD spoke to Moses in the Desert of Sinai in the first month of the second year after the Israelites left Egypt. He said: 2 "Let the Israelites observe the Passover at its appointed time. 3 On the fourteenth day of this month, at twilight at its appointed time, you shall observe it. Keep it according to all its decrees and laws.