2 Chronicles 7:9
And on the eighth day they held a solemn assembly; for they kept the dedication of the altar seven days, and the feast seven days.
Leviticus 23:36
Seven days ye shall present an offering by fire to Jehovah; on the eighth day shall be a holy convocation unto you; and ye shall present an offering by fire to Jehovah: it is a solemn assembly; no manner of servile work shall ye do.
Deuteronomy 16:8
Six days thou shalt eat unleavened bread, and on the seventh day is a solemn assembly to Jehovah thy God; thou shalt do no work.
1 Kings 8:65
And at that time Solomon held the feast, and all Israel with him, a great congregation, from the entrance of Hamath unto the torrent of Egypt, before Jehovah our God, seven days and seven days, fourteen days.
2 Chronicles 30:23
And the whole congregation took counsel to observe other seven days; and they observed the seven days with gladness.
Nehemiah 8:18
Also day by day, from the first day to the last day, he read in the book of the law of God. And they observed the feast seven days; and on the eighth day was a solemn assembly, according to the ordinance.
Joel 1:14
Hallow a fast, proclaim a solemn assembly, gather the elders, and all the inhabitants of the land to the house of Jehovah your God, and cry unto Jehovah.