'Solemnities' in the Bible

Look upon Zion, the city of our solemnities: thine eyes shall see Jerusalem a quiet habitation, a tent that shall not be removed, the stakes whereof shall never be pulled up, neither shall any of its cords be broken;

And in controversy they shall stand to judge: they shall judge it according to my judgments; and they shall keep my laws and my statutes in all my solemnities; and they shall hallow my sabbaths.

And it shall be the prince's part to supply the burnt-offerings, and the oblation, and the drink-offering, at the feasts, and at the new moons, and on the sabbaths, in all the solemnities of the house of Israel: it is he that shall prepare the sin-offering, and the oblation, and the burnt-offering, and the peace-offerings, to make atonement for the house of Israel.

And on the feast-days, and in the solemnities, the oblation shall be an ephah for a bullock and an ephah for a ram, and for the lambs as he is able to give; and oil, a hin for an ephah.

And I will cause all her mirth to cease: her feasts, her new moons, and her sabbaths! and all her solemnities.