Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The appointment of the pass-over sacrifices; not that which was the chief, the paschal lamb (sufficient instructions had formerly been given concerning that), but those which were to be offered upon the seven days of unleavened bread, which followed it, Num 28:17-25.

Commenting on Numbers 28:16-31

John Gill Reformed Baptist @doctorgill

In the first day shall be an holy convocation,.... The first of the seven days, which was kept in a very religious manner: ye shall do no manner of servile work therein; except by preparing food to eat; see Exo 12:16.

Geneva Bible Notes Reformed @genevanotes

In the first day [shall be] an holy convocation; ye shall do no manner of servile work [therein]: (f) Or, solemn assembly.