1Pet 5:1

“Exhibit therefore even now to me, apostolic sir, prophetic evidences, that I may recognise your divine virtue, and vindicate to yourself the power of remitting such sins! If, however, you have had the functions of discipline alone allotted you, and (the duty) of presiding not imperially, but ministerially; who or how great are you, that you should grant indulgence, who, by exhibiting neither the prophetic nor the apostolic character, lack that virtue whose property it is to indulge?”

“I request that you will diligently take care of the widows, and of the sick, and of all the poor. Moreover, you may supply the expenses for strangers, if any should be indigent, from my own portion, which I have left with Rogatianus, our fellow-presbyter; which portion, lest it should be all appropriated, I have supplemented by sending to the same by Naricus the acolyte another share, so that the sufferers may be more largely and promptly dealt with.”

“The Apostle was about to speak of humility, which he had already mentioned, saying: "doing good" (1 Pet. 4:19). He calls himself a "pastor" (elder) either on account of his age or on account of the dignity of a bishop; for the book of Acts (Acts 20:17) also calls bishops elders. Then, wishing to show that he has preeminence over them and that he calls himself a "fellow elder" out of humility, he sets forth his own dignity, namely that he is a "witness of the sufferings of Christ." He speaks as if to say: if I, who have explained to you such visions, do not find it beneath me to call myself a fellow elder, then it is also unjust for you to exalt yourselves over those subject to you. Likewise concerning humility the Lord also says: "If I, the Lord and Teacher, have washed your feet" (John 13:14). The Apostle adds that he is "a partaker of the glory that is to be revealed," in order to present the preeminence of humility, just as Paul also says: "When Christ, your life, appears, then you also will appear with Him" (Col. 3:4).”

“Since Peter proposes to discuss the modesty of the spirit, which he even touches upon while speaking about "doing good", (1 Peter 4:19) and now calling himself a co-elder, that is, both an elder together with them. Through this, Peter designates either his own age or the honor of bishops. For it is known that bishops are also called elders, as the book of Acts indicates. (Acts 20:17;28) Then, wishing to demonstrate his own eminence, and that he calls himself a co-elder for the sake of modesty, he adds his dignity: "witness of the sufferings of Christ:" wanting to signify through this: If I, who am an interpreter of such visions to you, do not contempt to call myself a co-elder, neither should you, who are righteous, be exalted against those who are inferior to you. Therefore, Christ, teaching this precept of modesty, thus pronounces: "If therefore I, your Lord and Master, have washed your feet." (Jn. 13:14) Furthermore, "a partaker of the glory that will be revealed," to demonstrate the excellence of a modest spirit: just as Paul says, "When Christ is revealed, then we will also be revealed." (Col. 3:1)”