1 Peter 1:1-2
1 Peter, an apostle of Jesus Christ, To those who reside as exiles, scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, who are chosen
2 according to the foreknowledge of God the Father, by the sanctifying work of the Spirit, to the obedience of Jesus Christ and the sprinkling of His blood: May grace and peace be multiplied to you.
Deut 7:6, Deut 14:2
2 Thessalonians 2:13
“Those who held this office had authority at least equal to the Old Testament prophets, for the apostles could speak and write God’s very words and thus could write the words which became New Testament Scripture.” (Wayne A. Grudem)
“At salvation the sanctifying work of the Spirit sets believers apart from sin to God, separates them from darkness to light, sets them apart from unbelief to faith, and mercifully separates them from a love of sin and brings them to a love of righteousness.” (Dr. John MacArthur)
“Peter reminds them that their future includes continual sprinkling with the blood of Christ, that is, continual restoration of fellowship with God and his people through the sacrificial blood of Christ figuratively sprinkled over them, a continual reminder to God that their sins are forgiven and that they are welcome in God’s presence and among his people.” (Wayne A. Grudem)