Exodus 12:14
And this day shall be for a memorial to you; and you shall keep it a feast to the Lord in your generations, with an everlasting observance.

Exodus 23:14
Three times every year you shall celebrate feasts to me.

Leviticus 23:2
Speak to the children of Israel, and thou shalt say to them: These are the feasts of the Lord, which you shall call holy.

Leviticus 23:21
And you shall call this day most solemn, and most holy. You shall do no servile work therein. It shall be an everlasting ordinance in all your dwellings and generations.

Nehemiah 8:15
And that they should proclaim and publish the word in all their cities, and in Jerusalem, saying: Go forth to the mount, and fetch branches of olive, and branches of beautiful wood, branches of myrtle, and branches of palm, and branches of thick trees, to make tabernacles, as it is written.

Ezekiel 44:24
And when there shall be a controversy, they shall stand in my judgments, and shall judge: they shall keep my laws, and my ordinances in all my solemnities, and sanctify my sabbaths.

Nahum 1:15
Behold upon the mountains the feet of him that bringeth good tidings, and that preacheth peace: O Juda, keep thy festivals, and pay thy vows: for Belial shall no more pass through thee again, he is utterly cut off.