I will make her that halted a remnant - I will cause a remnant to remain which shall not perish.
Lord shall reign ... in ... Zion - David’s kingdom shall be restored in the person of Messiah, who is the seed of David and at the same time Jehovah (Isa 24:23).
for ever - (Isa 9:6, Isa 9:7; Dan 7:14, Dan 7:27; Luk 1:33; Rev 11:15).