אַ֭חַי בָּגְד֣וּ כְמוֹ־נָ֑חַל כַּאֲפִ֖יק נְחָלִ֣ים יַעֲבֹֽרוּ׃
My brethren have dealt deceitfully as a brook, As the channel of brooks that overflow,
Rashi on Job
betrayed me like the stream that betrays [many] betrayals, as is explained in this chapter.
Rashi on Job
like the source of streams the source of streams, they pass from the proper trait of friendship. Now what is the betrayal of a stream?