אַ֭חַי בָּגְד֣וּ כְמוֹ־נָ֑חַל כַּאֲפִ֖יק נְחָלִ֣ים יַעֲבֹֽרוּ׃
나의 형제는 내게 성실치 아니함이 시냇물의 마름 같고 개울의 잦음 같구나
Rashi
betrayed me like the stream that betrays [many] betrayals, as is explained in this chapter.
Rashi
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?