The first occurrence.
They are wet with the showers of the mountains, and embrace the rock for want of a shelter. Job 24:8
The primitive root.
chet ח = the wall, thus outside, divide, half
sin ס = the thorn, thus grab, hate, protect
hey ה = man w/ raised arms, thus look, reveal, wonder, worship, breath
The story: When the wall (chet) which protects (sin) is found (hey, in the sense of pointing out a discovery). Our English word “house” comes from the CH-S root.