Although I do not see this in Episkopos teaching, My view is that there are different rewards.... Controversial are my opinions here, But I think the Bride gets one reward, the saints another, and the chosen another.... Three groups here....
These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful. (Revelation 17:14)
Some see one I see three here....
The faithful are the Bride, the chosen are the 144k of Israel, the Called are the saints. Each has a different reward.
As Believers we are all on the road to being saints, But many are called few are chosen... this choice is of God... Of divine Lot. We must make our calling and election sure. This is the big mistake of Protestantism in general is saying all believers are saints... We are all atoned for by the grace of God, and sanctified instantly but not all of us finish the race let alone are called for to make the saintly sacrifice.... Most in fact will die of natural causes among the faithful and be a part of the Bride.... The saints are God's army and execute his judgment in the end.... There will be an accelerated time of the saints soon to come to fulfillment (I.E. Fifth seal being complete and the number therein fulfilled.)
Then they were each given a white robe and told to rest a little longer, until the number of their fellow servants and their brothers[fn] should be complete, who were to be killed as they themselves had been. (Revelation 6:9, ESV) (Note I used the ESV because of the numerical aspect of this verse in the translation)
And to her (The Bride) was granted that she should be arrayed in fine linen, clean and white: for the fine linen is the righteousness of saints. (Revelation 19:8)
So What I say is the Big error in Protestantism in general, that has led to the endless division and denominationalism, a failure to distinguish faithful and the saints.... The faithful are determined by "whomsoever will" (Arminian) and The saints by divine election (Calvin) While opposed to one another in their pride of men they both err in denying each other in the unity of the Spirit. The Higher walk is a not salvation, and vice versa and the scripture speaking of salvation by grace are not divine election Hence the confusion and denominationalism. When a person says I am of Apollus I am of Paul they do not see this.... because all growth is from God. Paul planted Apollus watered....
Consider this before you accuse me of being a catholic or something.... I condemn the veneration and prayers to the saints and paying of indulgences.... I Just believe the reformers threw the baby out with the bathwater when they failed to distinguish between the faithful and the saints in scripture, the direct result is denominationalism and division.