ישעיהו ט:כ פירוש: רש״י ואבן עזרא

Manasseh with Ephraim Manasseh will join Ephraim.

Manasseh, Ephraim, etc. This verse explains the preceding; Manasseh will fight against Ephraim, and both against Judah.

and Ephraim with Manasseh With Manasseh, and together they will unite against Judah.