וַיִּמָּֽסְרוּ֙ מֵאַלְפֵ֣י יִשְׂרָאֵ֔ל אֶ֖לֶף לַמַּטֶּ֑ה שְׁנֵים־עָשָׂ֥ר אֶ֖לֶף חֲלוּצֵ֥י צָבָֽא׃
So there were delivered, out of the thousands of Israel, a thousand of every tribe, twelve thousand armed for war.
Targum Jonathan on Numbers
And of the thousands of Israel fit men were chosen who gave up themselves, a thousand of a tribe, twelve thousand, armed for the war.