Numbers 9:3-5

New International Version - UK

³ Celebrate it at the appointed time, at twilight on the fourteenth day of this month, in accordance with all its rules and regulations.’

⁴ So Moses told the Israelites to celebrate the Passover, ⁵ and they did so in the Desert of Sinai at twilight on the fourteenth day of the first month. The Israelites did everything just as the Lord commanded Moses.