New City Catechism Question 34
Since we are redeemed by grace alone, through Christ alone, must we still do good works and obey God's Word?
Yes, because Christ, having redeemed us by his blood, also renews us by his Spirit; so that our lives may show love and gratitude to God; so that we may be assured of our faith by the fruits; and so that by our godly behavior others may be won to Christ.
"But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light. Once you were not a people, but now you are God's people; once you had not received mercy, but now you have received mercy. Beloved, I urge you as sojourners and exiles to abstain from the passions of the flesh, which wage war against your soul. Keep your conduct among the Gentiles honorable, so that when they speak against you as evildoers, they may see your good deeds and glorify God on the day of visitation."
1 Peter 2:9-12
Charles Spurgeon had this to say about the battle between good works and faith in regards to salvation:
So, then, dear friends, these good works must be in the Christian. They are not the root, but the fruit of his salvation. They are not the way of the believer’s salvation; they are his walk in the way of salvation. Where there is healthy life in a tree, the tree will bear fruit according to its kind; so, if God has made our nature good, the fruit will be good. But if the fruit be evil, it is because the tree is what it always was—an evil tree. The desire of men created anew in Christ is to be rid of every sin. We do sin, but we do not love sin. Sin gets power over us sometimes to our sorrow, but it is a kind of death to us to feel that we have gone into sin; yet it shall not have dominion over us, for we are not under the law, but under grace; and therefore we shall conquer it, and get the victory.
As you prepare for worship tomorrow and look towards the week ahead, ask yourself if you are living daily for the Lord. Good works do not equal salvation, but they are a trustworthy fruit of your salvation. Find some practical ways you can show godly behavior in your week ahead, so that others may be won to Christ.