Reference for Deuteronomy 28:15

וְהָיָ֗ה אִם־לֹ֤א תִשְׁמַע֙ בְּקוֹל֙ יְהוָ֣ה אֱלֹהֶ֔יךָ לִשְׁמֹ֤ר לַעֲשׂוֹת֙ אֶת־כָּל־מִצְוֺתָ֣יו וְחֻקֹּתָ֔יו אֲשֶׁ֛ר אָנֹכִ֥י מְצַוְּךָ֖ הַיּ֑וֹם וּבָ֧אוּ עָלֶ֛יךָ כָּל־הַקְּלָל֥וֹת הָאֵ֖לֶּה וְהִשִּׂיגֽוּךָ׃

But it shall come to pass, if thou wilt not hearken unto the voice of the LORD thy God, to observe to do all His commandments and His statutes which I command thee this day; that all these curses shall come upon thee, and overtake thee.