כָּל־אִמְרַ֣ת אֱל֣וֹהַּ צְרוּפָ֑ה מָגֵ֥ן ה֝֗וּא לַֽחֹסִ֥ים בּֽוֹ׃
Every word of God is tried; He is a shield unto them that take refuge in Him.
Rashi on Proverbs
Every word of God is refined Heb. צרופה, refined, and He did not write anything unnecessary. [Therefore,] I should have been careful.