There is great and glorious encouragement in the fact that Paul begins his letters by blessing his readers with the "grace" of God. This reference to "grace" is more than a standard literary device by which letters were begun. It is a sincere prayer for the release of divine favor and power into the lives of those to whom he writes. It is also significant that at the beginning of Paul's letters he says, "Grace [be] to you," while the blessings at the end say, "Grace [be] with you." Why? John Piper suggests that
"at the beginning of his letters Paul has in mind that the letter itself is a channel of God's grace to the readers. Grace is about to flow 'from God' through Paul's writing to the Christians. So he says, 'Grace to you.' That is, grace is now active and is about to flow from God through my inspired writing to you as you read – 'grace [be] to you.' But as the end of the letter approaches, Paul realizes that the reading is almost finished and the question rises, 'What becomes of the grace that has been flowing to the readers through the reading of the inspired letter?' He answers with a blessing at the end of every letter: 'Grace [be] with you.' With you as you put the letter away and leave the church. With you as you go home to deal with a sick child and an unaffectionate spouse. With you as you go to work and face the temptations of anger and dishonesty and lust. With you as you muster courage to speak up for Christ over lunch. . . . [Thus] we learn that grace is ready to flow to us every time we take up the inspired Scriptures to read them. And we learn that grace will abide with us when we lay the Bible down and go about our daily living" (Future Grace, 66-67).
Let me add two additional comments to what Piper has said.
First, this will all make sense only if we expand our understanding of what “grace” is. Divine grace is more than an attitude or disposition in the divine nature. It is surely that, but an examination of the usage of this word in Scripture reveals that grace, if thought of only as an abstract and static principle, is deprived of its deeper implications.
The grace of God, for example, is the power of God's Spirit converting the soul. It is the activity or movement of God whereby he saves and justifies the individual through faith (see esp. Rom. 3:24; 5:15,17). Therefore, grace is not something in which we merely believe; it is something we experience as well.
Grace, however, is not only the divine act by which God initiates our spiritual life, but also the very power by which we are sustained in, nourished, and proceed through that life. The energizing and sanctifying work of the indwelling Spirit is the grace of God.
After Paul had prayed three times for God to deliver him from his thorn in the flesh, he received this answer: "My grace is sufficient for you, for my power is made perfect in weakness" (2 Corinthians 12:9). Although Paul undoubtedly derived encouragement and strength to face his daily trials by reflecting on the magnificence of God's unmerited favor, in this text he appears to speak rather of an experiential reality of a more dynamic nature. It is the operative power of the indwelling Spirit to which Paul refers. That is the grace of God.
Second, if Piper is right and the “grace” of God comes “to” us and abides “with” us via the instrumentality of Holy Scripture and its inspired truths, then we see here yet another example of what theologians have called “the means of grace.” Among the latter have often been mentioned the sacraments or ordinances of the church: the Eucharist and Baptism. But the sanctifying, sin-killing, Christ-exalting, soul-satisfying presence of the Holy Spirit also comes to us by means of the written Word! There can be little if any expectation of triumphant Christian living apart from the grace that is mediated to us and diffused throughout our hearts and minds pre-eminently through the Scriptures. When the Word, by the power of the Spirit, is heard, embraced, and enjoyed, we are strengthened to resist the flesh and to savor the Son.
Thanks be to God for his amazing, abiding, powerful grace!