Ana BeKoach

Ana BeKoach (Hebrew: אנא בכח, We beg you! With your strength) is a medieval Jewish piyyut (liturgical poem) called by its incipit. This piyyut, the acronym of which is said to be a 42-letter name of God, is recited daily by those Jewish communities which include a greatly expanded version of Korbanot in Shacharit and more widely as part of Kabbalat Shabbat. Some also recite it as part of Bedtime Shema or during the Omer.