You have to read more, and then some...1 Peter (80-110 AD)
“You have to read more, and then some...1 Peter (80-110 AD)”
Even the early church fathers and those of the first century agreed that Peter wrote the Epistle. It was not written later to compromise, but a letter to churches undergoing severe persecution after Paul’s death, but before Peter’s.
From your own citation.
Donald Guthrie writes: “There has been such widespread assumption that Peter’s epistle is but an echo of Paulinism that it is refreshing to find an increasing tendency to mark the individual contribution of Peter in the field of New Testament theology. There is both an absence of such Pauline doctrines as justification, law, the new Adam, and the flesh, and the presence of highly characteristic methods in Peter’s own presentation, such as his copious use of Old Testament citations and moral codes, his church-consciousness, historic consciousness and Christ-consciousness. Peter’s teaching cannot be systematized into a theological school of thought, but there is enough distinctiveness about it to differentiate it from Paul’s approach. The most notable contribution is the doctrine of Christ’s descent into Hades, which in its focus upon the resurrection of Christ stands in direct relationship to Peter’s emphasis on the resurrection in the early Acts speeches. As an eyewitness of the risen Christ Peter would never forget the profound impression which that stupendous event made upon his mind, and the doctrine of the descent, however obscure it is to modern minds, would surely be more natural as a part of primitive reflection upon the significance of the resurrection than as a later development, or as a peculiar fancy of a pseudonymous author.” (New Testament Introduction)