Believers are set apart to be reflections of Christ in the world.
When a person places faith in Jesus Christ and becomes a believer, he is sanctified—that is, set apart for God’s purpose. Unlike salvation, which takes place in a single moment, sanctification is a lifelong process. As the Word of God and the Holy Spirit work in our life, we are being sanctified. In other words, we’re progressively maturing in our faith.
In Romans 8:29, the apostle Paul explained God’s purpose for believers: “For those whom He foreknew, He also predestined to become conformed to the image of His Son.” Our character, conduct, and conversation should be reflections of Christ. On our own, we’d place too much emphasis on behavior and get caught up with following rules and rituals that look Christian without truly reflecting Jesus. Thankfully, we have been given the Holy Spirit, who works through God’s Word to renew our mind. But we must cooperate in the sanctification process by filling our mind with Scripture.
You’ll never be perfect this side of heaven, but the Lord shows you how to think and act so you can “walk in a manner worthy of the calling with which you have been called” (Ephesians 4:1).