וְהִבְדִּיל֤וֹ יְהוָה֙ לְרָעָ֔ה מִכֹּ֖ל שִׁבְטֵ֣י יִשְׂרָאֵ֑ל כְּכֹל֙ אָל֣וֹת הַבְּרִ֔ית הַכְּתוּבָ֕ה בְּסֵ֥פֶר הַתּוֹרָ֖ה הַזֶּֽה׃
and the LORD shall separate him unto evil out of all the tribes of Israel, according to all the curses of the covenant that is written in this book of the law.
Find Talmudic references to Deuteronomy 29:20: , passages from the Talmud Bavli and Yerushalmi.