The bow, and the word that bends the knee

Four bows, at fixed places: the opening blessing at its start and end, and Modim at its start and end (Berakhot 34a). And each bow is broken down across three consecutive words — Berakhot 12a: one bends at barukh and straightens at the Name.

Codified, that gives a three-beat movement: knees bend at בָּרוּךְ · the waist bows at אַתָּה · the body straightens at the Name. Three syllable-groups, three joints, in order.

⭐ And the first beat is a pun the language made before anyone arranged it. בָּרוּךְ (barukh, blessed) and בֶּרֶךְ (berekh, knee) are the same three letters — bet, resh, kaf. To bless and to kneel are written identically. So the instruction "bend the knee at barukh" is not a rule imposed on the word; it is the word being read out loud with a body. This app's standing claim is that the letters do the work, and here is the tidiest possible case of it: the text tells the body when to bend, and it does so by being spelled that way. Layer: Talmudic, with the three-joint breakdown from the later codes.