Week 37 is the third week of Sivan. In the verse from the story of Channah, she sings of how Hashem guards His pious ones, and the wicked are cut off in darkness (ie. they die).
The period of Rebbe Aharon's leadership included the dark days of the reign of Czar Nikolai I [see below], but Rebbe Aharon knew how to cheer up his Chassidim and help them to bear their heavy burdens. However, some powerful residents of Karlin objected to the extent to which song and dance permeated the Rebbe's "Court," and in 1864, the Rebbe himself was run out of town. He resettled in Stolin, and since then, this dynasty has been known as "Karlin-Stolin."
Rebbe Aharon the Second (so called to distinguish him from his grandfather, Rebbe Aharon the Great), was born, according to a family tradition, on Rosh Chodesh Sivan, 1802. Rebbe Aharon was the recognized leader of the Karliner Chassidim for nearly fifty years. A gifted organizer, Rebbe Aharon applied himself to strengthening the bonds between himself and his followers. To this end, he used to pay them frequent visits in their towns and welcome them most warmly in his court in Karlin. He also had a striking natural simplicity and sense of humor, and regularly made jokes in the Russian vernacular even while teaching his Chassidim at his table. He mixed freely with people of all kinds, and his confident and imposing presence was admired even in non-Chassidic circles.