Kaisipang Hudyo sa Exodo 17:8: Guide for the Perplexed

The Section on judges includes also the commandment to blot out the memory of Amalek (Deut. 25:17-19). In the same way as one individual person is punished, so must also a whole family or a whole nation be punished, in order that other families shall hear it and be afraid, and not accustom themselves to practise mischief. For they will say, we may suffer in the same way as those people have suffered; and if there be found among them a wicked, mischievous man, who cares neither for the evil he brings upon himself nor for that which he causes to others, he will not find in his family any one ready to help him in his evil designs. As Amalek was the first to attack Israel with the sword (Exod. 17:8-16), it was commanded to blot out his name by means of the sword; whilst Ammon and Moab, who have not been friendly simply from meanness, and have caused them injury by cunning, were only punished by exclusion from intermarriage with the Israelites, and from their friendship. All these things which God has commanded as a punishment are not excessive nor inadequate, but, as is distinctly stated, “according to the fault” (Deut. 25:2).