A Christian is not just a person who has believed in Christ so that he will not go to hell but will instead go to heaven. A Christian is a person who believes that he has been espoused to Christ as a holy virgin who is preparing for the marriage supper of the Lamb.
Just as a virgin who is preparing to be married is completely absorbed in her wedding preparations, a Christian is to be ever making himself ready for the marriage supper of the Lamb. God has given to every Christian—as one who is part of the bride of Christ who clothes herself in fine linen, bright and clean—to clothe himself in that fine linen that is his own righteous acts.
Believers who have so overemphasized the truth that God is perfectly complacent with them because they are in Christ and therefore have concluded that how they live does not matter to God have robbed themselves of the glory that God has given to them to clothe themselves in the fine linen that is their own righteous acts. As one who is espoused to Christ as a holy virgin, let us who eagerly await the marriage supper of the Lamb prepare ourselves for our glorious wedding to Him by living righteously in the power of the Spirit for the glory of God!