tnHeb “fly.” Ephraim/Judah are compared to a bird of prey.
42
tnHeb “on the shoulder of Philistia toward the sea.” This refers to the slopes of the hill country west of Judah. See HALOT506s.v.כָּתֵף.
43
tnHeb “Edom and Moab [will be the place of] the outstretching of their hand,” i.e., included in their area of jurisdiction (see HALOT648s.v.ח(וֹ)מִשְׁלֹ).