NASB
""On the fourteenth day of this month, at twilight, you shall observe it at its appointed time; you shall observe it according to all its statutes and according to all its ordinances.""
— Numbers 9:3, NASB
“In the fourteenth day of this month, at even, 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.”
“In the fourteenth day of this month, 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. ”
“On the fourteenth day of this month, at evening, you shall keep it in its appointed season--according to all its statutes, and according to all its ordinances, you shall keep it."”
“In the fourteenth day of this month, at twilight, you are to observe it at its appointed time; you must keep it in accordance with all its statutes and all its customs.””
“The fourteenth day of this month in the evening, according to all the ceremonies and justifications thereof.”
“In the fourteenth day of this month, at evening, you are to keep it at the regular time, and in the way ordered in the law.”
“In the fourteenth day of this month, at even, 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.”
Thus the LORD 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,
"Now, let the sons of Israel observe the Passover at its appointed time.
"On the fourteenth day of this month, at twilight, you shall observe it at its appointed time; you shall observe it according to all its statutes and according to all its ordinances."
So Moses told the sons of Israel to observe the Passover.
They observed the Passover in the first month, on the fourteenth day of the month, at twilight, in the wilderness of Sinai; according to all that the LORD had commanded Moses, so the sons of Israel did.
But there were some men who were unclean because of the dead person, so that they could not observe Passover on that day; so they came before Moses and Aaron on that day.