("You are One"). Prayer composed in the era of the
ge'onim (c. 800, Babylonia); the opening sentence is inspired by I Chronicles 17:21. In the
Amidah of the Sabbath
Afternoon Service, it forms an introduction to the prayer blessing the Day of Rest and may therefore be compared to
Attah Kiddashta ("You hallowed ...") in the Sabbath Eve
Evening Service,
Yismaḥ Mosheh ("Moses rejoiced ...") in the Sabbath
Morning Service, and
Tikkanta Shabbat ("You instituted the Sabbath ...") in the
Additional Service.
Attah Eḥad proclaims a threefold link between the One God, His Chosen People, and the holy Sabbath. The belief that Israel's three Patriarchs honored the Sabbath day is found in the
Midrash. The language employed here hints at the bliss awaiting observant Jews in the afterlife.
Ashkenazim often sing most of this prayer to a well-loved traditional melody.