Reference for Psalms 35:5

יִֽהְי֗וּ כְּמֹ֥ץ לִפְנֵי־ר֑וּחַ וּמַלְאַ֖ךְ יְהוָ֣ה דּוֹחֶֽה׃

Let them be as chaff before the wind, The angel of the LORD thrusting them.

ספר השרשים