The New Moon

(1) The LORD said to Moses and Aaron in the land of Egypt: (2) This month shall mark for you the beginning of the months; it shall be the first of the months of the year for you.

(3) הזה THIS [STAGE OF RENEWAL] — Moses was in perplexity regarding the Molad of (the exact moment when begins) the new moon — how much of it must be visible before it is proper to consecrate it as new moon: He therefore pointed it out to him in the sky with the finger and said to him, “Behold it like this, and consecrate it” (i. e., when you see the moon in a stage of renewal similar to this which you now behold you may proclaim that a new month has begun).

(2) החודש הזה לכם ראש חדשים, from now on these months will be yours, to do with as you like. [you have My authority to organise your own calendar. Ed.] This is by way of contrast to the years when you were enslaved when you had no control over your time or timetable at all. [Freedom, i.e. retirement from the “rat race,” means being able to formulate one’s own timetable. Ed.] While you were enslaved, your days, hours, minutes even, were always at the beck and call of your taskmasters.

This concept is related to the exodus from Egypt, because in exile it lacks renewal,... at the time of the redemption where it becomes clear that all energy comes from G-d, because G-d's energy contains within it constant renewal, as the verse states: G-d renews the creation every single day.

However, if someone forgets this concept, and believes himself to be within the laws of nature, he loses the concept of renewal. However, someone who connects to the internal concept of renewal of G-d he has within himself , he is constantly renewed. This is what the verse means - that it is FOR YOU - every Jew can cause renewal through faith in G-d, when it becomes clear to him that everything comes from G-d. This is the difference between Shabbat and Rosh Chodesh. Shabbat is like a small element of the next world, where there is no hiddenness of G-d, and Rosh Chodesh comes to cast a light on the concept of renewal even during the week. This power is dependent on the Jewish people. Furthermore, this explains why Moshe found difficulty with the creation of the moon. Moshe had perfect clarity in G-d's creation of the world, and therefore there was no need for him to have the concept of renewal, however, the concept of the new moon is renewal through faith, and Moshe showed him that...there are times when one needs to arouse renewal through faith.

Rebbi said: One should complete the blessing with "the one who sanctifies and Yisrael and the festivals.

The Tanna learned in front of Ravina