In Romans 5 Paul expands the basis for justification by faith (which he introduced in chapter 3) – the work of Jesus Christ on the cross. For Paul, we are ‘justified in/by His blood’ (5:9). Can’t get clearer than that! Chapter 6 then emphasises that believers have been made new (we have died and risen to new life – spiritually). Christians must consider themselves dead to sin and alive to God in Christ Jesus (6:11). That means a commitment to righteous living – hence Paul’s imperatives (5:12,13,19).
In Chapter 7, Paul writes specifically to Jews (7:1). If you don’t pick that up, then interpreting this next section is (more) problematic. Paul’s great concern is to explain that the Law has served it’s purpose (the argument here ties in very well with that in Galatians 3:15-29, esp 24-25). Obviously, as becomes clearer later in the letter (and is evidenced in other parts of the NT), Jewish Christians’ attitude to the Law was a major stumbling block to church unity. So, Paul tackles this in the Roman church. If he can address it there, then he has addressed in in the congregations at the centre of the known world. The Law is holy and good (but Paul would still maintain that Christ has superseded the Law). It provided a framework for covenantal obedience, and highlighted sin, revealing to the attentive Jew the need for forgiveness and the importance of faith.
In this context, the problematic section in 7:14-25 then is not about the Christian life, but about the experience of a Jew. Paul could possibly be speaking autobiographically, but I prefer the view that he assumes the persona of a faithful Jew. He is obviously not describing a legalistic, or careless, Jew since the ‘I’ is joyfully concurring with the law of God in the inner man. That he is describing a Christian is unlikely, simply because he describes the general experience of not doing the good that he wishes, and doing the evil that he does not wish. I don’t believe that’s a description of the Christian life. It is likely that this is a description of life under the Law. Paul then makes the transitional argument at the beginning of Chapter 8 that there is ‘therefore now’ no condemnation. That’s an eschatological ‘now’: now, in the New Age, the law of the Spirit of life in Christ Jesus has set you/me free from the law of sin and death (the situation he described in 7:14-25). If this is true then Chapter 7 helps us to answer the theological question about the different experience of God’s people under the Old and New Covenants, leading into the practical effect of the adoption as sons (8:15, cf8:23), which is an eschatological benefit of the New Covenant.
Interestingly, I think Lloyd-Jones recognised the problem of interpreting this as a description of a Christian and took the view that Paul here was describing the experience of someone becoming a Christian. I wouldn’t agree, but this view has more merit than others.
This second blog is by Michael Bird:
I’ve been preparing further notes on Romans 7 for one of my courses today. Here’s my solid gold, top four arguments why the Wretched Man is not a Christian:
 Paul W. Meyer, ‘The Worm at the Core of the Apple: Exegetical Reflections on Romans 7,’ in The Conversation Continues: Studies in Paul and John, ed. R.T. Fortna and B.R. Gaventa (Nashville: Abingdon, 1990), 68.
 Charles H. Talbert, Romans (Macon, GA: Smyth & Helwys, 2002), 188-89.