The haftara for Shavuot is taken from the beginning of Sefer Yechezkel, where the prophet describes the ma'aseh merkava, the vision of God's "chariot" taking leave of the Beit Ha-mikdash. It is customary to conclude this reading with a verse from the third chapter of Sefer Yechezkel (verse 12), a verse that we recite each day as part of the U'va Le'tziyon prayer: "Va-tisa'eni ru'ach va-eshma acharai kol ra'ash gadol: Barukh Kevod Hashem mi-mekomo!" ("A wind [or 'spirit'] lifted me, and I heard behind me a great roaring sound: 'Blessed is the