וַיַּכְרֵ֨ת יְהוָ֜ה מִיִּשְׂרָאֵ֗ל רֹ֧אשׁ וְזָנָ֛ב כִּפָּ֥ה וְאַגְמ֖וֹן י֥וֹם אֶחָֽד׃
און גאָט פֿאַרשנײַדט פֿון ישׂראל קאָפּ און עק, טײטלצװײַג און טײַכריטל, אין אײן טאָג.
Rashi
a large arch and a small arch An expression denoting kings and sultans.
Ibn Ezra
The people did not return to the Lord, because there was none to show them the right way.
Rashi
כִּפָּה, arcum voltum, arvolt in O.F. [an arch] i.e., those who hover over them like an arch.
Rashi
a small arch Heb. (אַגְמוֹן). This too is a small arch, and since it is bent over like a rush, (אַגְמוֹן), Scripture calls it אַגְמוֹן. And in the Baraitha of Samuel we find that there are constellations in the heavens, appointed to [influence the world], and these are their names. Here the prophet states that all their savants who prophesy for them and gaze at the stars, the Lord will cut off from them.