proclaim

Leviticus 23:2, 4
"Speak to the Israelites and say to them, 'These are My appointed feasts, the feasts of the LORD that you will proclaim as sacred assemblies. . . .

Exodus 12:16
On the first day you are to hold a sacred assembly, and another on the seventh day. You must not do any work on those days, except to prepare the meals--that is all you may do.

Deuteronomy 16:11
and you shall rejoice before the LORD your God in the place where He will choose as a dwelling for His Name--you, your sons and daughters, your menservants and maidservants, and the Levite within your gates, as well as the foreigner, the fatherless, and the widows among you.

Isaiah 11:10
On that day the root of Jesse will stand as a banner for the peoples. The nations will seek Him, and His place of rest will be glorious.

a statute

Leviticus 23:14
You must not eat any bread or roasted or new grain until the very day you have brought this offering to your God. This is to be a permanent statute for the generations to come, wherever you live.

Genesis 17:7
I will establish My covenant as an everlasting covenant between Me and you and your descendants after you, to be your God and the God of your descendants after you.

Exodus 12:17
So you are to observe the Feast of Unleavened Bread, for on this very day I brought your divisions out of the land of Egypt. You must observe this day as a lasting ordinance for the generations to come.

Numbers 18:23
The Levites are to perform the work of the Tent of Meeting, and they must bear their iniquity. This is a permanent statute for the generations to come. The Levites will not receive an inheritance among the Israelites.