The fourth blessing of the shabbat morning amidah "Yismach Moshe" / "Moses Rejoiced" is surprisingly strange. Not only is its language unclear, its meter irregular, its connection to shabbat dubious, but it is also out of character with every other fourth blessing of the amidah in our liturgy! How did it become to be this way? Why? And what is its connection to shabbat? Using his signature method of liturgical analysis, Elie Kaunfer comes up with some answers.