The author of this epistle is Peter who wrote it between 60-64 C.E. who is acknowledged as an apostle to the “circumcision” together with James (brother of Yeshua) and John the beloved, while Paul and Barnabas goes to the Gentiles (Gal 2:9).
The recipients are believers of Jewish descent [plus converts, most likely] living in the Asia Minor. Its purpose was to encourage suffering believers and to call them to personal holiness; Peter’s central focus is persecution.
The burning of the Temple was somehow prophesied by Peter in verse 17 saying that “judgment must begin at the house of G-D.”
Since you have purified your souls in obeying the truth [i]through the Spirit in [j]sincere love of the brethren, love one another fervently with a pure heart, 23 having been born again, not of [k]corruptible seed but [l]incorruptible, through the word of God which lives and abides [m]forever.