Theodoret of Cyrus
The author further describes the sequences, noting that they were not altered daily but instead were modified following the completion of a sevenfold cycle of days.
And their brethren dwelt in village, and came upon their sabbath days from time to time.
וַאֲחֵיהֶ֨ם בְּחַצְרֵיהֶ֜ם לָב֨וֹא לְשִׁבְעַ֧ת הַיָּמִ֛ים מֵעֵ֥ת אֶל־עֵ֖ת עִם־אֵֽלֶּה׃
One Church Father comments on this verse
The author further describes the sequences, noting that they were not altered daily but instead were modified following the completion of a sevenfold cycle of days.
Passages read together with this verse.