גַּ֣ם אָנֹכִ֗י חָלִ֤ילָה לִּי֙ מֵחֲטֹ֣א לַֽיהוָ֔ה מֵחֲדֹ֖ל לְהִתְפַּלֵּ֣ל בַּעַדְכֶ֑ם וְהוֹרֵיתִ֣י אֶתְכֶ֔ם בְּדֶ֥רֶךְ הַטּוֹבָ֖ה וְהַיְשָׁרָֽה׃
나는 너희를 위하여 기도하기를 쉬는 죄를 여호와 앞에 결단코 범치 아니하고 선하고 의로운 도로 너희를 가르칠 것인즉
Rashi
And as for me, far be it from me. Since you will do your part by returning to 'ה, I also, far be it from me to stop praying on your behalf.14 From this verse, the Gemara in Maseches Berachos 12b, derives, that if a person knows that his prayers will be answered if he prays for mercy for his fellow but refrains from doing so, he is considered to have sinned.