Jamieson, Fausset and Brown on Ezekiel 37:19

19. The union effected at the restoration from Babylon embraced but comparatively few of Israel; a future complete fulfilment must therefore be looked for.

stick of Joseph ... in the hand of Ephraim--Ephraim, of the descendants of Joseph, had exercised the rule among the ten tribes: that rule, symbolized by the "stick," was now to be withdrawn from him, and to be made one with the other, Judah's rule, in God's hand.

them--the "stick of Joseph," would strictly require "it"; but Ezekiel expresses the sense, namely, the ten tribes who were subject to it.

with him--that is, Judah; or "it," that is, the stick of Judah.