So Moses told the people of Israel that they should keep the passover: See the comments on verse 2. Moses passed on the LORD’s instructions concerning the Passover to the Israelites. So (literally “And”) renders well the Hebrew conjunction here.

Quoted with permission from de Regt, Lénart J. and Wendland, Ernst R. A Handbook on Numbers. (UBS Helps for Translators). Miami: UBS, 2016. For this and other handbooks for translators see here .