'New Moon' in the Bible

It shall be the prince’s part to provide the burnt offerings, the grain offerings and the drink offerings, at the feasts, on the new moons and on the sabbaths, at all the appointed feasts of the house of Israel; he shall provide the sin offering, the grain offering, the burnt offering and the peace offerings, to make atonement for the house of Israel.”

‘Thus says the Lord God, “The gate of the inner court facing east shall be shut the six working days; but it shall be opened on the sabbath day and opened on the day of the new moon.

The people of the land shall also worship at the doorway of that gate before the Lord on the sabbaths and on the new moons.

On the day of the new moon he shall offer a young bull without blemish, also six lambs and a ram, which shall be without blemish.