What is grace?
Grace is God's undeserved kindness: He gives forgiveness and new life in Jesus Christ as a gift we cannot earn. It saves us through faith and then teaches us to live for God.
Grace is one of the central words of the New Testament. In everyday speech it can mean elegance or a short prayer before a meal. In the Bible it means God’s favor toward people who have not earned it and never could. The commentary of Jamieson, Fausset and Brown defines it as God’s free favor in redemption.
The key is the difference between a wage and a gift. A wage is paid because it was earned; a gift is received because someone chose to give it. Paul draws this very contrast: what sin pays out is death, while eternal life is God’s free gift (Romans 6:23).
Grace is a gift we cannot earn
The clearest description of grace in the Bible comes in Paul’s letter to the Ephesians.
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast.
Eph 2:8–9 · King James Version (1769)
Grace is the source of salvation, and faith is only the means by which we receive it. Faith is not a payment. And because no one earns salvation, no one can boast about it: the most respectable person and the worst sinner come to God on the same terms.
This matters because the Bible is honest about our condition. It says that all have sinned, and then announces what God has done about it.
For all have sinned, and come short of the glory of God; Being justified freely by his grace through the redemption that is in Christ Jesus:
Rom 3:23–24 · King James Version (1769)
The word “freely” is the same Greek word used elsewhere for something received for nothing. “Justified” was a legal term: the judge declares a person righteous. John MacArthur explains that God placed the believer’s guilt on Christ in His sacrificial death and credits Christ’s righteousness to the believer. So grace never means that God simply looks away from sin. He punished sin in Jesus, and so He can justify the guilty while remaining just (Romans 3:26). And He did this out of love: Christ died for us while we were still sinners (Romans 5:8).
Paul also says that grace and merit cannot be mixed. If something is by grace, it is no longer by works (Romans 11:6). Paul is speaking of the remnant God chose, but Matthew Henry draws the general rule: “Salvation from the first to the last must be either of grace or of debt.”
Grace has a face: Jesus Christ
Grace is not only an idea. John sets the law given through Moses beside the grace and truth that came through Jesus Christ (John 1:17). The law showed people what was right and exposed their sin, but it could not give them the power to obey. In Jesus, God came close to people who were far from Him and in the end gave His life for them.
For the grace of God that bringeth salvation hath appeared to all men,
Titus 2:11 · King James Version (1769)
MacArthur and William MacDonald both note that “the grace of God” here is Jesus Christ Himself, grace in person, who appeared when He came into the world and gave Himself for our sins. “To all men” means that grace is not limited to any class of people: in the verses just before, Paul has spoken to old and young, men and women, free and slaves.
Paul goes straight on to say that the same grace that saves also teaches. MacDonald calls it a school of holiness, where believers learn to say no to ungodliness and worldly desires and to live wisely, justly and with devotion to God here and now (Titus 2:12).
That answers a common worry: if salvation is free, does it matter how we live? Paul raised the question himself and answered it with a firm no (Romans 6:1–2). The freedom of grace is freedom to obey God, not permission to sin. Good works cannot save us, but God has prepared them for those He saves (Ephesians 2:10). They are the fruit of grace, not its price.