1 Peter 1:1

In this inscription we have three parts: - I. The author of it, described, 1. By his name - Peter. His first name was Simon, and Jesus Christ gave him the surname of Peter, which signifies a rock, as a commendation of his faith, and to denote that he should be an eminent pillar in the church of God, Gal 2:9. 2. By his office - an apostle of Jesus Christ. The word signifies one sent, a legate, a messenger, any one sent in Christ's name and about his work; but more strictly it signifies the highest office in the Christian church. Co1 12:28, God hath set some in the church, first apostles. Their dignity and pre-eminence lay in these things: - They were immediately chosen by Christ himself, - they were first witnesses, then preachers, of the resurrection of Christ, and so of the entire gospel-dispensation, - their gifts were excellent and extraordinary, - they had a power of working miracles, not at all times, but when Christ pleased, - they were led into all truth, were endowed with the spirit of prophecy, and they had an extent of power and jurisdiction beyond all others; every apostle was a universal bishop in all churches, and over all ministers. In this humble manner Peter, (1.) Asserts his own character as an apostle. Hence learn, A man may lawfully acknowledge, and sometimes is bound to assert, the gifts and graces of God to him.

— Matthew Henry's Concise Commentary (public domain)