The Five Solas: Faith Alone (Galatians 2:15-21)

Paul grounds justification in a truth that cuts through heritage, effort, and every attempt at self-made righteousness: “a person is not justified by works of the law, but through faith in Jesus Christ.” The Reformation recovered this gospel against the old drift of Pelagian and semi-Pelagian thinking, the belief that people can somehow assist in their own rescue. The human heart naturally wants a system where grace comes to those who do their best, but that turns salvation into assisted self-salvation instead of God’s sovereign rescue.

The law is good, holy, and righteous, but the law was never meant to justify sinners. The law reveals God’s holiness, exposes sin, condemns sin, and points people to their need for a Savior. Abraham himself was declared righteous because he believed God, not because his obedience earned acceptance. The law is God’s powerful hammer against the “huge and horrible monster” of presumed righteousness.

Faith in Christ is more than intellectual agreement. Faith is believing loyalty, a committed allegiance to Jesus Christ rather than to religious performance, heritage, or moral achievement. Christ is a perfect and unchanging object of faith, unlike every unstable thing people regularly trust. Faith itself is not the work that earns justification. Faith is the means by which sinners are united to Christ, and Christ’s perfect righteousness is then applied to them.

Justification is God’s declaration that the guilty sinner is now righteous before him. Christ’s righteousness is an alien righteousness, because it does not come from within the believer but from outside, from Christ himself. Paul’s words hold together the reality that believers are simultaneously justified and still sinners. Sin remains a struggle in this life, but sin no longer holds dominion over those who have been crucified with Christ.

Paul therefore warns against rebuilding what Christ has torn down. Legalism promises control, measurable progress, security, and a way to prove spiritual status, but it shifts the ground of acceptance from Christ’s work to human effort. Personal convictions, boundaries, and disciplines become legalism when they become proof of righteousness or standards imposed on others. Blessing also becomes distorted when it is treated as a guaranteed reward for good behavior.

Christ lives in those united to him through the Spirit. Christ’s righteousness gives them a new status before God, and Christ’s indwelling presence steadily makes their hearts, minds, and wills responsive to him. The Christian life is lived by faith in the Son of God “who loved me and gave himself for me.” Christ’s finished work is sufficient, and grace is never nullified by human weakness.

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Key Takeaways

• 1. Right standing does not depend on effort Paul levels every human distinction before God. Christian heritage, moral effort, material blessing, and even obvious failure cannot establish righteousness. The standard is too holy for self-justification, which means both the religious person and the openly broken person need the same Christ. [52:53]
• 2. The law exposes, but cannot justify The law reveals God’s righteousness and exposes the depth of sin, but it cannot impart the righteousness it demands. Its proper work is to bring sinners to the end of themselves and point them to Christ. Returning to the law as a means of acceptance misses the Savior to whom the law was always pointing. [54:14]
• 3. Faith unites sinners to Christ Faith is not another achievement placed on the scales beside good works. Faith receives Christ and joins the believer to his death, resurrection, and perfect righteousness. Confidence rests not in the strength of faith, but in the perfection of the One trusted. [59:17]
• 4. Do not rebuild what Christ tore down Legalism often feels safe because it gives people rules, comparisons, and boxes to check. Yet every hidden performance metric can become an attempt to make oneself acceptable before God. Christ has already torn down that burden, so believers can stop rebuilding the ruins. [82:12]
• 5. Christ’s finished work is sufficient Christ loved his people and gave himself for them before they could make themselves pleasing to God. Their weakness does not cancel his grace, and their ongoing struggle does not remove their justified status. Their daily life of faith begins from acceptance, not from the anxious attempt to earn it.
  
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Youtube Chapters

• [00:00] - Welcome
• [43:22] - Galatians 2 and Faith Alone
• [44:54] - The Reformation’s Recovery of the Gospel
• [45:07] - Pelagianism and Assisted Self-Salvation
• [47:58] - Justification by Faith Alone
• [50:03] - Heritage and Works Cannot Justify
• [53:18] - The Purpose of the Law
• [56:18] - Faith in a Perfect Christ
• [60:14] - Alien Righteousness and Present Acceptance
• [65:09] - Legalism and Self-Justification
• [72:21] - Crucified With Christ
• [75:32] - Christ Lives in Me
• [78:43] - Remembering God’s Love
• [80:52] - Do Not Rebuild the Ruins

Bible Reading

Galatians 2:15-21
“We ourselves are Jews by birth and not Gentile sinners; yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified. But if, in our endeavor to be justified in Christ, we too were found to be sinners, is Christ then a servant of sin? Certainly not! For if I rebuild what I tore down, I prove myself to be a transgressor. For through the law I died to the law, so that I might live to God. I have been crucified with Christ. It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me. I do not nullify the grace of God, for if righteousness were through the law, then Christ died for no purpose.” [43:20]

Romans 4:3
“For what does the Scripture say? ‘Abraham believed God, and it was counted to him as righteousness.’” [54:44]

Romans 6:6
“We know that our old self was crucified with him in order that the body of sin might be brought to nothing, so that we would no longer be enslaved to sin.” [01:13:37]

Ephesians 2:8-9
“For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.” [01:04:13]

Observation questions

1. In Galatians 2:15-16, how many times does Paul contrast justification by faith in Christ with justification by works of the law? What does this repetition show about the main issue he is addressing?
2. What does Galatians 2:18 say happens when a person rebuilds what was torn down? What kinds of rules and requirements were being added to faith in Christ among the Galatians? [50:29]
3. According to Galatians 2:19-20, what has died, what is now true of the believer, and how is the believer’s present life to be lived?
4. What does Romans 6:6 say is the purpose of being crucified with Christ, and what does it say believers are no longer enslaved to? [01:13:30]

Interpretation questions

1. Paul says that no one is justified by works of the law. Why is it important that this includes both the openly broken person and the religious person with a strong moral background? [52:15]
2. Abraham obeyed God in many ways, yet Romans 4:3 says righteousness was counted to him because he believed God. What does this help clarify about the relationship between faith, obedience, and acceptance with God? [54:44]
3. Galatians 2:20 says that Christ lives in the believer, while Romans 6:6 says sin no longer enslaves the believer. How can a believer still struggle seriously with sin while remaining truly justified and no longer under sin’s dominion? [01:06:02]
4. Paul says that righteousness through the law would mean Christ “died for no purpose.” Why does adding personal effort, moral achievement, or religious performance to Christ’s work undermine grace? [01:21:19]

Application questions

1. What do you tend to look to when you want reassurance that you are doing well spiritually—church background, Bible reading, serving, avoiding certain sins, family choices, or something else? How might that good thing become a way of trying to justify yourself? [01:22:07]
2. Personal convictions and wise boundaries can be helpful, but they become legalism when they are treated as proof of righteousness or imposed on others. Are there convictions you hold that you may be tempted to use as a measure of someone else’s spiritual maturity? [01:10:14]
3. When failure or ongoing sin makes you feel distant from God, where do you usually turn first: trying harder, hiding, comparing yourself to others, or returning to Christ? What would it look like to remember that Christ’s righteousness—not your recent performance—is your standing before God? [01:01:53]
4. The Christian life is lived by faith in the Son of God “who loved me and gave himself for me.” What regular moment in your day could become a place to remind yourself of Christ’s personal love and finished work? [01:17:46]
5. Do you ever treat blessing as a reward for good behavior, or hardship as proof that God is displeased with you? How does the gospel give steadiness when life does not follow that simple pattern? [01:11:01]
6. Christ’s finished work is sufficient, and his grace is not nullified by human weakness. What burden of self-justification do you need to lay down this week so that you can obey from acceptance rather than trying to earn acceptance? [01:20:23]