King James Version (KJV)
Among all this people {there were} seven hundred chosen men lefthanded; every one could sling stones at an hair {breadth}, and not miss.
Modern English
Among all these soldiers there were seven hundred chosen men who were left-handed. Every one of them could sling a stone at a hair and not miss.
Hebrew
מִכֹּ֣ל ׀ הָעָ֣ם הַזֶּ֗ה שְׁבַ֤ע מֵאוֹת֙ אִ֣ישׁ בָּח֔וּר אִטֵּ֖ר יַד־יְמִינ֑וֹ כָּל־זֶ֗ה קֹלֵ֧עַ בָּאֶ֛בֶן אֶל־הַֽשַּׂעֲרָ֖ה וְלֹ֥א יַחֲטִֽא׃
mikol ׀ haʿam hazeh shbaʿ meʾvot ʾiysh baḥvr ʾiṭer yad-ymiynvo kal-zeh qoleʿa baʾeben ʾel-hashaʿarah vloʾ yaḥaṭiʾ