2 Kings 4:23
And he said, Why will you go to him today? It is neither new moon nor sabbath. And she said, It is well.
Numbers 10:10
Also in the day of your gladness, and in your solemn days, and in the beginnings of your months, you shall blow with the trumpets over your burnt offerings, and over the sacrifices of your peace offerings. And they shall be to you for a memorial before Jehovah. I am Jehovah your God.
Numbers 28:11
And in the beginning of your months you shall offer a burnt offering to Jehovah: two young bulls, and one ram, seven lambs of the first year without spot,
1 Chronicles 23:31
And they were to offer all burnt sacrifices to Jehovah in the sabbath, in the new moons, and on the set feasts, by number, according to the order commanded to them, continually before Jehovah,
Isaiah 1:13-15
Bring no more vain sacrifice; incense is an abomination to Me; the new moon and sabbath, the going to meeting; I cannot endure evil and the assembly!