[1] Jacobs immigrated to America when he was around 20 and settled in Richmond, Virginia, where he initially worked as a merchant.
[2] When his brother Henry resigned as Hazan of Kahal Kadosh Beth Shalome in 1857, he began officiating.
[4] In 1869, he succeeded the late Isaac Leeser as rabbi of Beth El Emeth in Philadelphia, Pennsylvania.
He also served as an officer of B'nai B'rith, Kesher Shel Barzel, and the Free Sons of Israel.
He contributed to the Philadelphia Jewish press and aided in revising the English translation of the Szold-Jastrow Prayer-Book.