the regeneration = the making of all things new. The restoration of Act_3:21 = the "when" of the next clause. In Mar_10:30 we have the synonymous expression "the coming age": thus referring to the future time of reward, and not to the then present time of their following; the word palingenesia occurs only here, and in Tit_3:5. The Syriac reads "in the new world" (i.e. age).
the Son of man. See App-98. XVI
shall sit = shall have taken His seat.
in = upon. App-104.
the throne of His glory = His glorious throne.
upon. Greek. epi.App-104.
the twelve tribes of Israel. This can have nothing to do with the Church of the Mystery as revealed in the prison epistles.