2 Kings 4:23
He said, "Why do you want to go see him today? It is not the new moon or the Sabbath." She said, "Everything's fine."
Numbers 10:10
"Also in the time when you rejoice, such as on your appointed festivals or at the beginnings of your months, you must blow with your trumpets over your burnt offerings and over the sacrifices of your peace offerings, so that they may become a memorial for you before your God: I am the Lord your God."
Numbers 28:11
"'On the first day of each month you must offer as a burnt offering to the Lord two young bulls, one ram, and seven unblemished lambs a year old,
1 Chronicles 23:31
and whenever burnt sacrifices were offered to the Lord on the Sabbath and at new moon festivals and assemblies. A designated number were to serve before the Lord regularly in accordance with regulations.
Isaiah 1:13-15
Do not bring any more meaningless offerings; I consider your incense detestable! You observe new moon festivals, Sabbaths, and convocations, but I cannot tolerate sin-stained celebrations!