וַֽיהוָ֥ה הִתְאַנֶּף־בִּ֖י עַל־דִּבְרֵיכֶ֑ם וַיִּשָּׁבַ֗ע לְבִלְתִּ֤י עָבְרִי֙ אֶת־הַיַּרְדֵּ֔ן וּלְבִלְתִּי־בֹא֙ אֶל־הָאָ֣רֶץ הַטּוֹבָ֔ה אֲשֶׁר֙ יְהוָ֣ה אֱלֹהֶ֔יךָ נֹתֵ֥ן לְךָ֖ נַחֲלָֽה׃
Now the LORD was angered with me for your sakes, and swore that I should not go over the Jordan, and that I should not go in unto that good land, which the LORD thy God giveth thee for an inheritance;
Find Talmudic references to Deuteronomy 4:21: , passages from the Talmud Bavli and Yerushalmi.