Numbers 29:35

The eighth day was to be azereth, a closing feast, and only belonged to the feast of Tabernacles so far as the Sabbath rest and a holy meeting of the seventh feast-day were transferred to it; whilst, so far as its sacrifices were concerned, it resembled the seventh new moon's day and the day of atonement, and was thus shown to be the octave or close of the second festal circle (see at Lev 23:36).

This chapter appoints the offerings that were to be made by fire unto the Lord in the three great solemnities of the seventh month. I. In the feast of trumpets on the first day of that month (Num 29:1-6). II. In the day of atonement on the tenth day (Num 29:7-11). III. In the feast of tabernacles on the fifteenth day and the seven days following (v. 12-38). And then the conclusion of these ordinances (Num 29:39, Num 29:40).