Numbers 21:24
JPS-1917וַיַּכֵּ֥הוּ יִשְׂרָאֵ֖ל לְפִי־חָ֑רֶב וַיִּירַ֨שׁ אֶת־אַרְצ֜וֹ מֵֽאַרְנֹ֗ן עַד־יַבֹּק֙ עַד־בְּנֵ֣י עַמּ֔וֹן כִּ֣י עַ֔ז גְּב֖וּל בְּנֵ֥י עַמּֽוֹן׃
And Israel smote him with the edge of the sword, and possessed his land from the Arnon unto the Jabbok, even unto the children of Ammon; for the border of the children of Ammon was strong.
Rashi Commentary
כי עז FOR [THE BOUNDARY OF THE CHILDREN OF AMMON] WAS STRONG — And what constituted its strength? The warning of the Holy One, blessed be He, who had said to them (the Israelites), (Deuteronomy 2:19), Harass them not, etc.”.
Other Translations
וַיַּכֵּ֥הוּ יִשְׂרָאֵ֖ל לְפִי־חָ֑רֶב וַיִּירַ֨שׁ אֶת־אַרְצ֜וֹ מֵֽאַרְנֹ֗ן עַד־יַבֹּק֙ עַד־בְּנֵ֣י עַמּ֔וֹן כִּ֣י עַ֔ז גְּב֖וּל בְּנֵ֥י עַמּֽוֹן׃
And Yisra᾽el smote him with the edge of the sword, and possessed his land from Arnon to Yabboq, as far as the children of ῾Ammon: for the border of the children of ῾Ammon was strong.