19 Therefore, when Hashem your God grants you safety from all your enemies around you, in the land that Hashem your God is giving you as a hereditary portion, you shall blot out the memory of Amalek from under heaven. Do not forget!
v’-ha-YAH b’-ha-NEE-akh a-do-NAI e-lo-HE-kha l’-KHA mi-kol O-y’-VE-kha mi-sa-VEEV ba-A-retz a-sher a-do-NAI e-lo-HE-kha no-TAYN l’-KHA na-kha-LAH l’-rish-TAH tim-KHEH et ZAY-kher a-ma-LAYK mi-TA-khat ha-sh-MA-yim LO tish-KAKH
יט וְהָיָה בְּהָנִיחַ יְהֹוָה אֱלֹהֶיךָ לְךָ מִכָּל־אֹיְבֶיךָ מִסָּבִיב בָּאָרֶץ אֲשֶׁר יְהֹוָה־אֱלֹהֶיךָ נֹתֵן לְךָ נַחֲלָה לְרִשְׁתָּהּ תִּמְחֶה אֶת־זֵכֶר עֲמָלֵק מִתַּחַת הַשָּׁמָיִם לֹא תִּשְׁכָּח׃
25:19 When Hashem your God grants you safety from all your enemies around you
One of the three commandments that the People of Israel are to fulfill after successfully conquering the Land of Israel is the obliteration of the Amalekites. The Amalekites are descendants of Esau and were the first to attack the Children of Israel after the exodus from Egypt. Amalek is more than just a nation — it represents an ideology antithetical to that of Israel: Absolute denial of Godliness in this world and a total lack of morality. For this reason, once the land is conquered and the People of Israel are settled, Israel was required to wage war against Amalek, and against their system of belief.