2 Kings 4:23
He asked her, "What's the point of visiting him today? It's not a New Moon, and it isn't the Sabbath!" But she kept saying, "Things will go well."
Numbers 10:10
At the beginning of the month, during your time of rejoicing at the appointed place, sound the trumpet over your burnt offering, then sacrifice your peace offering, since they are to be your memorial before the LORD your God. I am the LORD your God."
Numbers 28:11
"On the first day of each month, you are to offer a burnt offering to the LORD consisting of two young bulls, one ram, and seven one year old lambs, all of them without any defects,
1 Chronicles 23:31
whenever burnt offerings are presented to the LORD, whether on Sabbaths, New Moons, or scheduled festivals, regularly in the LORD's presence in accordance with the number required to conduct their service.
Isaiah 1:13-15
Stop bringing useless offerings! Incense is detestable to me, as are your New Moons, Sabbaths, and calling of convocations. I cannot stand iniquity within a solemn assembly.