Sovereign Grace, the Trinity, and the Christian Life

"Peter, an apostle of Jesus Christ, To those who are elect exiles of the Dispersion in Pontus, Galatia, Cappadocia, Asia, and Bithynia, according to the foreknowledge of God the Father, in the

sanctification of the Spirit, for obedience to Jesus Christ and for sprinkling with His blood: May grace and peace be multiplied to you."

- I Peter 1:1-2 

This is the opening salutation from Peter's first epistle. Notice that it is not written to men in general but specifically to Christians, whom he identifies as the true Israel (compare Romans 9:8, Galatians 3:7, 6:16, etc.), gathered by the sovereign grace of God. 

And when I say God, I don't mean in a vague, generic sense. Rather, Peter identifies our election as the work of the triune God of the Bible: the foreknowledge of the Father, the sanctification of the Holy Spirit, and the obedience of the Son, applied, figuratively speaking, by the sprinkling with His blood, an image from the Old Testament sacrifices (such as Leviticus 7:2 and 14:7). Peter does not contemplate a unitary deity, whether of the Arian type or the Sabellian. 

Nor does Peter contemplate any sort of works religion, as is taught by those pseudo-Christian sects. Rather, he tells us that the Father chose us, the Holy Spirit changed us, and the Son fulfilled all righteousness for us, that it might be imputed to us. In just these two verses, Peter teaches us to see our reunion with our God as fully trinitarian and fully by His sovereign grace, which is why he could add, in verse 4, that we have "an inheritance that is imperishable, undefiled, and unfading, kept in heaven for you." The same sovereign, trinitarian grace that saved us also keeps us secure until we reach our heavenly goal."I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ" (Philippians 1:6).