Numbers 28:25 (BSB)

On the seventh day you shall hold a sacred assembly; you must not do any regular work.

From Numbers 28. Also in the ESV.

Commentary on Numbers 28:25

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 28:16-31: 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.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 28:25: Also in the day of the firstfruits,.... When the firstfruits of the wheat harvest were brought unto the Lord, which was the day of Pentecost, fifty days from the sheaf of the wave offering being brought: when ye bring a new meat offering unto the Lord; that is, a meat offering made of the new corn, which were two wave loaves of two tenth deals...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Numbers 28:23-25: Num 28:23-25 The festal sacrifices of the seven days were to be prepared “in addition to the morning burnt-offering, which served as the continual burnt-offering.” This implies that the festal sacrifices commanded were to be prepared and offered every day after the morning sacrifice.