Each biblical month begins on a New Moon or Rosh Chodesh (Exodus 12:2). New Moons set the dates for the biblical feasts. Celebrating the New Moon honors God as the Creator of time. New Moon feasts are unfamiliar to most Christians. Yet, Isaiah 66:23 says that we will worship on this day!
From new moon to new moon, and from Sabbath to Sabbath, all flesh shall come to worship before me, declares the LORD. —Isaiah 66:23 [ESV]
Many references to New Moon celebrations are found in the Bible when you know where to look. For instance, when David avoided a feast with King Saul because he feared Saul would kill him, he missed a New Moon feast (1 Samuel 20:1-27). Learn about the fascinating celebration of the New Moon in the Feast Book, and learn the traditional New Moon prayer.