a roof beam: the heavy horizontal timber laid across the walls of a building to carry its roof or ceiling, and by extension the roof itself
A house in ancient Israel was roofed by laying heavy timbers across the tops of its walls and its inner pillars, then covering them with lighter poles, brush, and packed mud. This word names those load-bearing timbers. It is the single piece of wood that makes a shelter possible, and that is why one plain word can serve at both ends of the social scale.
The five places it appears run from the humble to the splendid:
- a group of poor prophets go down to the Jordan so that each can cut one for a new dwelling (2 Kings 6:2 and 6:5)
- Solomon's builders overlay the temple's with gold along with its doorways and walls (2 Chronicles 3:7)
- two lovers lie under cedar branches and call them the beams of their house (Song of Songs 1:17)
The wood itself differs enormously, from common local oak or pine to cedar shipped in at great cost from Lebanon, but the word does not change with it. It always names the timber that spans an opening and holds up whatever is above.
Because the beam is what a roof rests on, naming it can stand for the whole roof. When Lot begs the mob outside his door to leave his two guests alone, he pleads that they have come under the shadow of his beam, meaning under his roof and therefore under his protection. Ancient readers heard it that way too: the early Greek translators simply used their ordinary word for a roof or shelter (στέγη).
Hebrew also has a verb built from this noun (קָרָה), meaning to lay beams on a building or roof it over. Its most memorable use lifts a carpenter's ordinary work into poetry: in Psalm 104 God lays the beams of his upper rooms on the waters, framing the sky the way a builder frames an upstairs room.