Numbers 9:4 YLT

²  'Also, the sons of Israel prepare the passover in its appointed season;

³  in the fourteenth day of this month between the evenings ye prepare it in its appointed season; according to all its statutes, and according to all its ordinances ye prepare it.'

⁴  And Moses speaketh unto the sons of Israel to prepare the passover,

⁵  and they prepare the passover in the first 'month', on the fourteenth day of the month, between the evenings, in the wilderness of Sinai; according to all that Jehovah hath commanded Moses, so have the sons of Israel done.

⁶  And there are men who have been defiled by the body of a man, and they have not been able to prepare the passover on that day, and they come near before Moses, and before Aaron, on that day,