Grace, Effort, and Going Deeper into Dependence
Piper then adds another layer to the discussion by pointing out a paradox in Paul’s teaching. When Christians are justified by faith, they want to work harder for Christ. But as they do, they increasingly recognize that even their obedience depends on God’s grace.
Paul captures this tension when he writes, “I worked harder than any of them—yet not I, but the grace of God that was with me.”
Keller explains that every step of obedience actually drives believers deeper into dependence, not independence. Even growth in holiness reinforces the truth that salvation, from beginning to end, is sustained by grace.
This is why justification by faith alone comes full circle. Not only are Christians saved by grace, but they are transformed by grace. Sanctification is not repayment. It is the fitting, joyful response to what God has already done.
Why Keller’s Teaching Still Matters
Though Tim Keller is no longer alive, his insights continue to help Christians avoid false alternatives. He refused to separate grace from obedience or obedience from grace. He rejected both legalism and moral apathy, insisting instead that the gospel produces changed hearts, not merely changed behavior.
In a church culture that often swings between performance and passivity, Keller’s teaching remains deeply relevant. He reminds believers that obedience fueled by fear will never last, but obedience fueled by grace is both humble and resilient.
Justification by faith alone does not make sanctification optional. It makes it inevitable.
