Short answer: Philippians 2:13 says that the desire and the power to obey God are themselves gifts God produces inside the believer. Paul has just told the Philippians to "work out your own salvation" (v. 12) — and verse 13 gives the reason they can: God is the one at work in them, shaping both what they want and what they actually do, for His own good purpose.
The context: a letter to a church Paul loved
Philippians is a warm letter written from imprisonment to a congregation Paul planted in a Roman colony in Macedonia. Chapter 2 is its center of gravity. Paul urges the church toward unity and humility (2:1–4), points to Christ's self-emptying and exaltation as the pattern (2:5–11), and then applies it: "work out your own salvation with fear and trembling" (2:12, KJV).
That command lands hard on modern ears — it sounds like earning. Verse 13 is Paul's immediate safeguard against that reading: "For it is God which worketh in you both to will and to do of his good pleasure" (KJV). The little word for is doing heavy lifting. Working out is possible only because God is working in.
What it means, phrase by phrase
"For it is God which worketh in you." The subject is God, not you. The verb pictures active, energizing work — an inward operation, not merely external instruction. Paul locates this in you: in the affections, will, and habits of ordinary believers.
"Both to will." God works on the wanting. This is the part people miss. Scripture does not treat obedience as gritting your teeth against desires God never touches; it says God reshapes the desires themselves (compare Ezekiel 36:26–27, where God promises a new heart and His Spirit causing His people to walk in His statutes).
"And to do." God also works on the doing. Right desire without follow-through would leave us in Romans 7's frustration. Paul says God supplies both the intention and the execution.
"Of his good pleasure." The purpose is God's own delight and design — not a reward negotiated by us. That is why the previous verse can pair effort with "fear and trembling": reverence, not anxiety, is the fitting response when God Himself is at work in you.
Here faithful Christians differ in emphasis. Reformed readers hear verse 13 as strong evidence that God's grace is the decisive cause of the believer's willing, since even the will is His work. Wesleyan-Arminian and Catholic readers agree God initiates and empowers, but emphasize that verse 12's command implies real, non-coerced human cooperation with grace. Both camps hold the two halves together; they weigh the mystery differently. The text itself gives a command and a divine guarantee, and refuses to cancel either.
Cross-references
- Ephesians 2:8–10 — saved by grace through faith, "not of works," yet created for good works God prepared beforehand.
- 1 Corinthians 15:10 — Paul labors more than all, "yet not I, but the grace of God which was with me."
- Hebrews 13:20–21 — God works in us "that which is wellpleasing in his sight."
- John 15:5 — "without me ye can do nothing."
- 2 Peter 1:3 — divine power has given us all things pertaining to life and godliness.
How to apply it today
Philippians 2:13 kills two opposite errors. It kills passivity: if God is working in you, then effort is not optional — verse 12 still says work out. And it kills exhaustion: the pressure to generate your own change from scratch is lifted, because the willing and the doing are God's supply.
Practically, that reframes prayer. Instead of only asking God to change circumstances, ask Him to change what you want — "make me want what You command." It also reframes failure. A stalled habit of obedience is not proof that God has stopped working; it's an invitation to depend on the One who works, rather than on your own resolve. Then act, in the ordinary way: show up, obey the next clear thing, and trust that the strength in it was never yours to manufacture.
Frequently Asked Questions
Does Philippians 2:12 teach that we earn salvation? No. Paul says "work out," not "work for." The picture is developing and living out a salvation already given, the way you work out the implications of a gift you've received. Verse 13 makes this explicit by grounding the whole effort in God's prior work, and Ephesians 2:8–9 rules out earning entirely.
If God works in me, why do I still have to try? Because Scripture presents God's work and human effort as cooperating, not competing. Paul commands effort in verse 12 and guarantees God's work in verse 13 in the same breath. His own testimony in 1 Corinthians 15:10 — "I labored... yet not I, but the grace of God" — holds both together without resolving the tension.
What does "fear and trembling" mean here? It signals reverent seriousness before God, not terror of losing salvation. Paul uses similar language elsewhere for humble, careful conduct. Given verse 13, the reason for trembling is precisely that God Himself is at work in you — a weighty thought, not a threatening one.
Does this verse mean God controls my choices? Christians answer differently. Some read "worketh in you both to will" as God effectually producing the choice; others read it as God enabling and drawing a will that genuinely responds. The verse plainly says God works on the will; it does not spell out the mechanism, and honest readers have disagreed for centuries.