זוהר שמות — דף קלג ע”ב

The bed symbolizes Jacob and the evening prayer, the table corresponds to King David and his praises, the chair to Abraham man of grace, and the candelabra to Isaac of the force of judgment. In the recitation of Shema Israel, light strikes the hard spark and divides into seventy branches of the Tree of Life. The verse Barukh Shem is said in a whisper because it belongs to the secret supernal world. The minister Boel guards four keys upon which the letters of the divine Name are engraved.