Ephraem the Syrian
He will place an iron yoke upon your neck, meaning that the rulers of the Gentile nations will dominate them.
Thou shalt serve thy enemy, whom the Lord will send upon thee, in hunger, and thirst, and nakedness, and in want of all things: and he shall put an iron yoke upon thy neck, till he consume thee.
וְעָבַדְתָּ֣ אֶת־אֹיְבֶ֗יךָ אֲשֶׁ֨ר יְשַׁלְּחֶ֤נּוּ יְהוָה֙ בָּ֔ךְ בְּרָעָ֧ב וּבְצָמָ֛א וּבְעֵירֹ֖ם וּבְחֹ֣סֶר כֹּ֑ל וְנָתַ֞ן עֹ֤ל בַּרְזֶל֙ עַל־צַוָּארֶ֔ךָ עַ֥ד הִשְׁמִיד֖וֹ אֹתָֽךְ׃
One Church Father comments on this verse
He will place an iron yoke upon your neck, meaning that the rulers of the Gentile nations will dominate them.
Passages read together with this verse.