פירוש על מלכים ב 11:7

The two groups of you. Who I said should be in the Sur Gate and in the Gate of the Runners, and with them all those who leave on Shabbos, [i.e.,] all the men of the departing watch.

Will guard Beis [Hamikdosh] of Adonoy for the king. That no harm befall him from within the Beis [Hamikdosh] of Adonoy. He did not require all this except for the first Shabbos, until Atalyoh was killed and her allies fled from the city.