John Gills Exposition of the Bible Commentary - Numbers 29:39
These things ye shall do to the Lord, in your set feasts ,.... Or rather in the times set and appointed to you, as the Jewish writers F15 Maimon. & Bartenora in Misn. Pesach, c. 7. sect. 4. interpret it; and so Jarchi interprets it of a fixed time, which seems better; since these were not all feast days, on which the above sacrifices were to be offered, for one of them was a fast, even the day of atonement: besides your vows, and your freewill offerings : which might be offered... read more
Matthew Henry's Complete Commentary - Numbers 29:12-40
Soon after the day of atonement, that day in which men were to afflict their souls, followed the feast of tabernacles, in which they were to rejoice before the Lord; for those that sow in tears shall soon reap in joy. To the former laws about this feast, which we had, Lev. 23:34-44, here are added directions about the offerings by fire, which they were to offer unto the Lord during the seven days of that feast, Lev. 23:36. Observe here, 1. Their days of rejoicing were to be days of sacrifices.... read more