Shortly before sundown on the 29th of Adar, G-d commanded Moses regarding the mitzvah of sanctifying the crescent new moon and establishing a lunar calendar. This is the first mitzvah the Jews were given as a nation.
Moses had difficulty envisaging the moon's appearance at the exact moment of its monthly rebirth. After the sun set, G-d showed Moses the crescent new moon of the new month of Nissan, showing him the precise dimensions of the moon at the moment the new month is to be consecrated.
For the generations that followed, each new month was ushered in when two witnesses testified before the Sanhedrin (rabbinic supreme court) that they had seen the molad, the new moon. In the 4th century CE, Hillel II foresaw that the Jews would no longer be able to follow a Sanhedrin-based calendar. So Hillel and his rabbinical court established the perpetual calendar which is followed today -- until Moshiach will come and reestablish the Sanhedrin.
Links::
Lunar Time
Rosh Chodesh
The Molad
A few months after its creation, Napoleon's "Sanhedrin" (rabbinical supreme court) was dissolved. The Sanhedrin was created to approve certain religious regulations requested by the French "Assembly of Notables." The regulations were designed to blur the distinction between Jews and non-Jews.
The rulings of this pseudo-Sanhedrin were never adopted by Jewish communities.
Link:: Napoleon Bonoparte
You murmured in your tents, saying, '"Because G‑d hates us, He took us out of the land of Egypt to deliver us into the hands of the Amorites to exterminate us." (Deuteronomy 1:27)
Really, He loves you, but you despised Him. As the common saying goes, “Whatever is in your heart towards your friend, you imagine he feels towards you.” (Rashi)
Often we justify our own feelings by projecting them on others, twisting the entire relationship backward and upside-down.
We can’t get our way, so we say, “I’m doing everything to accommodate them, and they’re being so stubborn.”
And they say, “But it’s just the opposite! You won't give an inch!”
We don’t want to be around people, so we feel, “I’m trying to be nice to them, but they don’t want me around.”
And they say, “We would love to have you around, but you don’t seem to want to be here with us.”
In just the same way, we project our own feelings on the One who made us, attempting to twist truth inside-out.
We become absorbed with our own little world and can’t find room for G‑d within it, so we feel, “All I am to G-d is just an ugly little cockroach messing up His universe.”
How does G‑d feel?
There, with G‑d, is the true reality.
That He gives you life and all things He knows are good for you and awaits the time you will recognize how good it all is.
That He showers you with love, and awaits the time that you will return that love to Him.
That He eagerly awaits every word of your prayers, treasures every mitzvah you might do, kisses every word of Torah that comes from your lips—but you have no idea how precious you are to Him.
You may push back. You may run away. But just one small turn, and He’s there waiting.
Run from your delusions. Embrace reality. Reality is love.