In Proposition 121, George Peters states:
“This Kingdom, of necessity, requires a Pre-Millennial Personal Advent of Jesus Christ.”
For those not familiar with the term Pre-Millennial, how it is defined and applied often depends on what “flavor” of eschatology to which one affirms. At its core, Pre-Millennialism can be defined as the belief that
“the Second coming will occur before a literal thousand-year reign of Christ from Jerusalem upon the earth. In the early church, premillennialism was called chiliasm, from the Greek term meaning 1,000, a word used six times in Revelation 20:2-7. This view is most often contrasted with Postmillennialism which sees Christ’s return after a golden “millennial age” where Christ rules spiritually from his throne in heaven, and Amillennialism which sees the millennium as a figurative reference to the current church age.” 
From what I have been able to discover, George Peters affirmed the dispensational approach to eschatology and thus falls into the pre-tribulation rapture position, a position to which I do not adhere for reasons at this point outside the scope of this particular study/post. With that said, both dispensationalists and non-dispensationalists can be pre-milliannialists. I know it can be confusing when all the various nuances and associated positions subsumed within eschatology are explored. For the purposes of this Proposition, Peters is merely affirming the pre-millennial position as defined above without, at least at this point, inserting any dispensational specific language.
The most notable observation Peters presents in Proposition 121 is the following:
“This Sec. Advent will be the greatest and grandest event that the world has every yet witnessed. Great and glorious as was the First Advent – unspeakably precious and indispensably necessary unto Salvation – yet it was a Coming in humiliation and ending in death, with a glimpse at exaltation, but this is a Coming in overwhelming power, splendor, majesty and glory – a Coming in triumph and like the mighty Theocratic King. To this Coming the Scriptures especially turns the eye of faith and speaks of it in the most lofty and exultant strain; and we may rest assured that what God thus describes, and to which He directs the hope of prophets, Apostles, and believers, must be in conceivably magnificent. It is an honor to aid in upholding and directing attention to it.”
I appreciate the majestic nature by which Peters describes the Second Advent. It is fast approaching the time of year when the First Advent is typically remembered. Much pomp and attention is given to the Messiah coming to earth through the miracle of the virgin birth for the purpose of saving us from the wages of sin which is death. I fear we often forget, misunderstand, and do not appreciate the even greater majesty that will be the Second Advent. The entire movement of salvation history and thus Scripture points us to this event. It would behoove us to join Peters in “upholding and directing attention to it” and to better understand this doctrine of the Kingdom.
 “Premillennialism,” Theopedia, accessed December 12, 2017, https://www.theopedia.com/premillennialism.