“And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ. Faithful is He that called you, who also will do it.” (1 Thessalonians 5:23-24)
Our being preserved unto the coming of our Lord Jesus Christ is a great task that must be performed. Our greatest need is to be blameless before our God and this happens to be something that God wants to do and is doing in us. The good work He began in us, He will perform it until the day of Jesus Christ. God is faithful to this work.