turned. the captivity = turned the fortunes. This does not refer to a captivity or captives, but to a restoration to blessing. See Job_42:10 and Eze_16:53 and Eze_16:56, where it is three times explained as "return to your former estate". See App-67.
Zion. See App-68.
like them that dream. The reference is to the waking in 2Ki_19:35. Isa_37:36. The illustration is in Luk_24:41. Act_12:9 (603 B.C.)