David Einhorn (rabbi)

David Einhorn (November 10, 1809 – November 2, 1879) was a German rabbi and leader of Reform Judaism in the United States. In 1855, he became the first rabbi of the Har Sinai Congregation in Baltimore, the oldest Jewish-American congregation affiliated with the Reform movement since its inception. While there, he created an early American prayer book for the congregation that became one of the progenitors of the 1894 Union Prayer Book.

Writing and preaching in German, rabbi Einhorn denounced slavery as a moral evil, rebutting the pro-slavery theology of rabbi Morris Jacob Raphall. In April 1861, after preaching a sermon against slavery, Einhorn was driven out of Baltimore by a pro-slavery mob. He fled to Philadelphia and became rabbi of Reform Congregation Keneseth Israel. In 1866 he moved to New York City, where he became rabbi of Congregation Adath Israel.