וְ֠הָיָה כַּאֲשֶׁר־שָׂ֨שׂ יְהוָ֜ה עֲלֵיכֶ֗ם לְהֵיטִ֣יב אֶתְכֶם֮ וּלְהַרְבּ֣וֹת אֶתְכֶם֒ כֵּ֣ן יָשִׂ֤ישׂ יְהוָה֙ עֲלֵיכֶ֔ם לְהַאֲבִ֥יד אֶתְכֶ֖ם וּלְהַשְׁמִ֣יד אֶתְכֶ֑ם וְנִסַּחְתֶּם֙ מֵעַ֣ל הָֽאֲדָמָ֔ה אֲשֶׁר־אַתָּ֥ה בָא־שָׁ֖מָּה לְרִשְׁתָּֽהּ׃
And it shall come to pass, that as the LORD rejoiced over you to do you good, and to multiply you; so the LORD will rejoice over you to cause you to perish, and to destroy you; and ye shall be plucked from off the land whither thou goest in to possess it.
Read halakhic rulings (Jewish law) on Deuteronomy 28:63: and classical halakhic sources.