עֲמַדְתֶּ֤ם עַֽל־חַרְבְּכֶם֙ עֲשִׂיתֶ֣ן תּוֹעֵבָ֔ה וְאִ֛ישׁ אֶת־אֵ֥שֶׁת רֵעֵ֖הוּ טִמֵּאתֶ֑ם וְהָאָ֖רֶץ תִּירָֽשׁוּ׃ (ס)
너희가 칼을 믿어 가증한 일을 행하며 각기 이웃의 아내를 더럽히니 그 땅이 너희의 기업이 될까보냐 하고
Rashi
על צבאתם — This is the same as בצבאותם with their hosts — all their hosts according to their tribes. Sometimes the word על is merely used in place of a single letter (ב as a prefix); e. g., (Genesis 27:40) “על חרבך shalt thou live” which is the same as בחרבך, by thy sword; (Ezekiel 33:26) “Ye stand על חרבכם” which is the same as בחרבכם, by your sword.
Rashi
ועל חרבך—The phrase is equivalent to בחרבך BY THY SWORD. The word על is sometimes used instead of the prefix ב, as (Ezekiel 33:26) “Ye stand by your sword (על חרבכם)”, which is the same as בחרבכם; (Exodus 6:26) “by their hosts (על צבאותם), which is the same as בצבאותם.