King James Version (KJV)
For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.
Modern English
For the men of Ammon and Moab rose against the inhabitants of Mount Seir, devoting them to destruction, and when they had made an end of the inhabitants of Seir, they all helped to destroy one another.
Hebrew
וַ֠יַּעַמְד֡וּ בְּנֵ֡י עַמּ֠וֹן וּ֠מוֹאָ֡ב עַ֠ל יֹשְׁבֵ֡י הַ֠ר שֵׂ֠עִ֡יר לְ֠הַחֲרִ֡ים וּ֠לְ֠הַשְׁמִ֡יד וּ֠כְ֠כַלּ֡וֹתָם בְּ֠יֹשְׁבֵ֡י שֵׂ֠עִ֡יר עָ֠זְר֡וּ אִ֠ישׁ בְּ֠רֵעֵ֡הוּ לְ֠מַשְׁחִֽית׃
vayaʿamdv bney ʿamvon vmvoʾab ʿal yoshbey har sheʿiyr lhaḥariym vlhashmiyd vkkalvotam byoshbey sheʿiyr ʿazrv ʾiysh breʿehv lmashḥiyt