Death of King Nebuchadnezzar, the Babylonian emperor who conquered Jerusalem and destroyed the first Holy Temple 26 years earlier, died on the 25th of Adar of the year 3364 from creation. (Jeremiah 52:31)
Rebbetzin Chaya Mushkah Schneerson (1901-1988) of righteous memory, wife of the Lubavitcher Rebbe of righteous memory, was born on Shabbat, the 25th of Adar, in Babinovich, a town near the Russian city of Lubavitch, in the year 5661 from creation (1901). In an address delivered on the 25 of Adar of 1988 (the Rebbetzin's 87th birthday, and about a month after her passing), the Rebbe initiated an international birthday campaign, urging people to celebrate their birthdays and utilize the day as a time of introspection and making resolutions involving an increase in good deeds.
Links:
A biography of the Rebbetzin
On the Jewish Birthday and the birthday customs
On the Shabbat that falls on or before the 1st of Nissan, a special reading called "Hachodesh" (Exodus 12:1-20) is added to the regular Shabbat Torah reading. Hachodesh recounts G-d's historic communication to Moses in Egypt on the 1st of Nissan (2 weeks before the Exodus) regarding the Jewish calendar, the month of Nissan and the Passover offering.
Links: The Reading for Hachodesh
From the teachings of the Chassidic masters on Hachodesh
About the Jewish calendar
Haftorah in a Nutshell
This Shabbat is Shabbat Mevarchim (“the Shabbat that blesses" the new month): a special prayer is recited blessing the Rosh Chodesh ("Head of the Month") of the upcoming month of Nisan, which falls on Thursday of the following week.
Prior to the blessing, we announce the precise time of the molad, the "birth" of the new moon. See molad times.
It is a Chabad custom to recite the entire book of Psalms before morning prayers, and to conduct farbrengens (chassidic gatherings) in the course of the Shabbat.
Links: Shabbat Mevarchim; Tehillim (the Book of Psalms); The Farbrengen
There are those who say that before we do any mitzvah, we must first understand why it needs to be done. Why else were we given a mind?
There are others who say we must just obey with simple faith. How else can we bond with One who is entirely beyond our understanding?
Abraham did both. He began with absolute faith, even when it was impossible to make sense of what he had been told to do. Yet he would not leave until his questions were answered and he had been given a way to understand.
“Don’t do a thing to the young man, for now I know that you are a G‑d fearing person.” (Genesis 22:12)
Abraham said to G‑d, “Let me present my case. First You told me that my descendants will be from Isaac. Then You told me to take him for an offering. Now You say I mustn’t do a thing to him…” (Rashi, citing Midrash)
That makes sense. Matters that are beyond our understanding can never be fit neatly into human reason. But neither can they be left in conflict.
Because if what you believe is true, it must be true everywhere. Even within your own limited human mind.