הִכֹּן֙ וְהָכֵ֣ן לְךָ֔ אַתָּ֕ה וְכָל־קְהָלֶ֖ךָ הַנִּקְהָלִ֣ים עָלֶ֑יךָ וְהָיִ֥יתָ לָהֶ֖ם לְמִשְׁמָֽר׃
你要預備好，也要為自己備妥一切：你和聚集到你這裡的全體軍眾都要如此；你要作他們的守衛。
Rashi
Be prepared and make ready for yourself Prepare yourself, and make ready for yourself an army of others.
Rashi
and you will be to them for a guardian It is the custom of kings to pay attention, concerning their armies, to how they will march forth, and to appoint guards so that a destroyer should not come upon his army at night.