אֲנִ֧י יְהוָ֛ה חֹקֵ֥ר לֵ֖ב בֹּחֵ֣ן כְּלָי֑וֹת וְלָתֵ֤ת לְאִישׁ֙ כדרכו [כִּדְרָכָ֔יו] כִּפְרִ֖י מַעֲלָלָֽיו׃ (ס)
나 여호와는 심장을 살피며 폐부를 시험하고 각각 그 행위와 그 행실대로 보응하나니
Sefer Chasidim
And so that your heart should not trouble you when you see or examine what we are about to write here, and you might say, “These are not words of piety, but merely superstitions,” do not let this thought arise in your heart, and do not be misled into thinking this way. For this book is called Sefer Chasidim (The Book of the Pious), and its name reflects its true nature.
Sefer Chasidim
“I, the Lord, search the heart and examine the kidneys” (Jeremiah 17:10).