This prayer by Rabbi Sabato Morais was offered in conclusion to a sermon delivered at some point days after the assassination of President Abraham Lincoln on 15 April 1865, and reprinted in The Philadelphia Inquirer on 20 November 1865. The time of the assassination corresponded to motsei shabbat and the beginning of the 6th day of Passover 5625, and so we can imagine this prayer having been delivered at some point over the remaining two festival days of Pesaḥ, on April 17th or 18th. The prayer was preserved by Rabbi Morais in his ledger (page 24, clipping 029), an archive of newsclippings recording material he contributed to the press, among other announcements. (Many thanks to the Library of the University of Pennsylvania for helping to make this resource accessible.) Next to the clipping, Rabbi Sabato has written, “Andrew Johnson proved anything but a worthy successor to the sainted Abraham Lincoln.” . . .