אַ֣ךְ ׀ יָדֹ֣עַ תֵּדְע֗וּ כִּ֣י אִם־מְמִתִ֣ים אַתֶּם֮ אֹתִי֒ כִּי־דָ֣ם נָקִ֗י אַתֶּם֙ נֹתְנִ֣ים עֲלֵיכֶ֔ם וְאֶל־הָעִ֥יר הַזֹּ֖את וְאֶל־יֹשְׁבֶ֑יהָ כִּ֣י בֶאֱמֶ֗ת שְׁלָחַ֤נִי יְהוָה֙ עֲלֵיכֶ֔ם לְדַבֵּר֙ בְּאָזְנֵיכֶ֔ם אֵ֥ת כָּל־הַדְּבָרִ֖ים הָאֵֽלֶּה׃ (ס)
Only know ye for certain that, if ye put me to death, ye will bring innocent blood upon yourselves, and upon this city, and upon the inhabitants thereof; for of a truth the LORD hath sent me unto you to speak all these words in your ears.’
Read halakhic rulings (Jewish law) on Jeremiah 26:15: and classical halakhic sources.