1 Chronicles 23:31
and to offer all burnt sacrifices unto the LORD in the sabbaths, in the new moons and solemnities, by number, according to the order commanded unto them, continually before the LORD.
Isaiah 1:13-14
Bring no more vain oblations; the incense is an abomination unto me; the new moons and sabbaths, the calling of assemblies, I cannot stand them; iniquity and the solemn meeting.
Leviticus 23:1-17
And the LORD spoke unto Moses, saying,
Leviticus 23:24
Speak unto the sons of Israel, saying, In the seventh month in the first day of the month, ye shall have a rest, an alarm for a reminder, and a holy convocation.
Leviticus 23:39
But in the fifteenth day of the seventh month, when ye have gathered in the fruit of the land, ye shall keep a feast unto the LORD seven days; the first day shall be a sabbath, and on the eighth day shall also be a sabbath.
Numbers 10:10
Also in the day of your gladness and in your solemn days and in the beginnings of your months, ye shall blow the trumpets over your burnt offerings and over the sacrifices of your peace, that they may be to you for a memorial before your God; I AM your God.
Numbers 28:1-29
And the LORD spoke unto Moses, saying,
Psalm 81:1-4
Sing aloud unto God our strength; make a joyful noise unto the God of Jacob.