This episode spells out the spiritual loss incurred by believers when they adopt a legalistic approach to sanctification. The problem, according to Galatians 5:4, is that persistent appeal to the law for justification cuts the Christian off from the grace power source for sanctification. The Christian is no longer relying on the Holy Spirit and His power to walk by the Spirit (Gal. 5:16), he's now relying on works of the law for maturing in Christ. This is the fundamental error of the Galatians cited in Gal. 3:3, of whom Paul asked, "having begun by the Spirit, are you now being perfected by the flesh?" This approach to sanctification repudiates grace, resulting in being "severed from Christ" and "fallen from grace." This strong language doesn't refer to one's position in Christ, but rather to the believer's rejection of the grace of God present in sanctification. "Severed" is the translation from "katergeo" and means estrangement or made ineffective. It's the same verb in Romans 6:6, where Paul contends that the "old self might be done away with." There the old self continues to exists but is rendered ineffective. So "severed from Christ" doesn't mean the believer has lost his salvation, but he has in fact made the sanctifying grace of God ineffective by his appeal to works of the law. The result is that the believer has "fallen from grace." The grace of sanctification is available, but the believer prefers perfecting himself without it.
Pardoned and Gainfully Employed: Your New Life in Christ
This episode spells out the appropriate reaction of Christians who realize the enormity of mercy extended to them in the death, burial and resurrection of Christ. All Christians are acquitted from a gigantic debt that they could not pay. "The wages of sin is death," and Christ paid those wages. As we progressively understand the severity of the debt and the eternal death in hell that we all justly deserve, we gain proper perspective on how to live our remaining days. Paul says in Romans 6:13 that "we are alive from the dead." Gratitude over being the recipients of God's indescribable gift motivates us to re-present our members as instruments of righteousness in honor of the God who graciously pardoned us and gave us life. So we gladly unite ourselves with Christ in the likeness of His death, putting to death the deeds of the flesh (Rom. 8:13), so that we may also walk in the newness of His life, His resurrected life. We live for the will and pleasure of God as grateful servants in the army of the Lord.
Keeping the Law, through Christ
This initial episode answers the question right from Psalm 119:5-6, which I believe summarizes the main theme of the entire psalm. "Oh that my ways may be established to keep your statutes! Then I will not be ashamed when I look upon all your commandments." Since the question mostly deals with how Psalm 119 should be applied to NT believers, the episode deals with a common misunderstanding of the importance of the Law for Christians. Some claim that Christians are not under the moral law based, based on Christ having fulfilled it for us. While our acceptance in God's sight is completely based on Christ's perfect adherence to the Law, coupled with His substitutionary death, Christians are obliged to keep the moral law by abiding in Christ. The sum of the Law is love of God and neighbor, and the New Testament constantly holds believers accountable to observe these commandments THROUGH abiding in Christ. This then is the clearest application of Psalm 119 to NT believers, that God would help establish our ways to abide in Christ, resulting in keeping God's moral law.
Saved for Good Works
This episode places the themes of redemption, sin, and works in their proper perspective. Preoccupation with sin issues is understandable for infants in Christ, but evidence of true saving faith is that service to God and/or "works" that He prepared beforehand (Eph 2:10) become the motivation for life. The episode connects "service to the living God" with the roadmap of sanctification in Eph 4:22-24, where putting off the old and putting on the new self is emphasized as the means of producing good works.