Building on the Foundation

Since the invention of the Internet, innumerable calendars have popped up to challenge the Hebrew calendar, each one claiming to be the true calendar of the Bible. This includes numerous "sighted" calendars, that is, calendars that call for gazing up at the night sky and searching for the first visible crescent of the moon. This first visible crescent is said to be the "new moon" of the Bible and to mark the beginning of each month and, in turn, determine the dates of the holy days. First of all, if anyone can point to even one Bible verse that says we must look up at the sky and find the first visible crescent of the moon, I would love to see it. I have never found such a verse, nor have I ever seen anyone else point to such a verse. Secondly, the "new moon" doesn't appear in the Hebrew text of the Bible, as explained in this post . Neither is such a "new moon" defined; some define the new moon as the conjunction, when the moon is dark, and ...