As Pastor David continues through Romans he will be teaching us the importance of looking forward to the second coming of Christ. When Christ returns He will take us to be with Him and will redeem, not only as believers, but He will redeem the earth. Creation itself is groaning, waiting for the Lord to bring redemption. We are still at the orphanage, waiting to be officially adopted and taken home. Those who have this hope in the coming of Christ keep themselves pure, just as Christ is pure.