Charles Ellicott Commentary Leviticus 23:41

"And ye shall keep it a feast unto Jehovah seven days in the year: it is a statute for ever throughout your generations; ye shall keep it in the seventh month." — Leviticus 23:41 (ASV)

Seven days in the year. —These seven days denote the Feast of Tabernacles proper, while the eight days in Leviticus 23:39 include the concluding festival of the last day. (See Leviticus 23:36.)

In your generations. —Better, throughout your generations, as the Authorized Version renders it in Leviticus 23:14; Leviticus 23:21; Leviticus 23:31 of this very chapter. (See Leviticus 3:17.)