The one that speaks does so with sympathy, compassion, and humility, always mindful of the fact that in the kingdom of the Christ, the first shall be last and the last shall be first. So it is with the one who serves. As was said, service can be tiring, and yes, one is able to serve the kingdom of the Creator God through the strength that said God supplies; but in context, the strength that the covenant God supplies for service is the strength that allows the one that would generally be considered more honorable, to humbly, willfully, and lovingly serve the one that would generally be considered to be less honorable.
It is that type of service, in which the first become last and the last become first because of an active embracing of the message of the cross inside the message of the Gospel, and not because of some type of forceful reversal in which the previously oppressed take it upon themselves to lord it over those that may or may not have had a hand in the oppression, that demonstrates true strength. It is in this that the Creator God is glorified, as this self-abnegating service is done in deference to the kingly claim of the one to whom belongs glory and power forever and ever.
At verse twelve, Peter begins the insertion of an interlude related to suffering on behalf of the Christ. Much of this suffering, of course, will come about because of what it is that is learned at their meal table. The messianic, kingly declaration of the Christian meal table will practically work itself out in a lifestyle that demonstrates one’s adherence to the Lordship of Jesus and to his claims to power, rather than any over-reaching and illegitimate claims on offer from the Caesar.
However, because Christ’s kingdom model is one of self-sacrifice and service, the Christian, recognizing the legitimate extent of human authority, actually seeks to solidify the role of human authorities. By taking up the cause of Christ’s kingdom and properly applying its principles of service and compassion through good works and public benefaction, the care of orphans and widows, the feeding of the hungry and thirsty, and the clothing of the naked, the Christian is able to inform the governing powers that they have a limit imposed upon them by the Creator God that they can reach, and upon reaching that limit are to be told that they are to go here and no further, for then they would be intruding on the responsibilities of those that claim to represent the world’s true imperial power.
For Peter, as for Paul, the Christian becomes the model citizen. He does not foment unrest but informs the world and its rulers about a king and a kingdom, doing so through service and sacrifice, thus putting the Gospel on display and allowing the Spirit to do the work of the transformation of hearts and minds. Peter pleads with these denizens of a greater kingdom---one that demonstrates what it truly means to be human, saying “But let none of you suffer as a murderer or thief or criminal or as a troublemaker. But if you suffer as a Christian,” that is, if you suffer because your practice makes it clear that you are not a participant in the worship of Caesar and his power, “do not be ashamed, but glorify God that you bear such a name” (4:15-16).