What does the Bible say about the church and its members?

The church is described in the Scriptures as the body of believers who have been called out by God to worship Him in spirit and truth. The Bible emphasizes that those who comprise the church are those that believe on the Lord Jesus Christ, as indicated in passages like Ephesians 2:19-22, where Paul explains that believers are fellow citizens with the saints and members of the household of God. It is God's sovereign grace that brings individuals into the fold, as demonstrated in Romans 8:28-30, where it is made clear that those whom God foreknew He also predestined to be conformed to the image of His Son. Consequently, a church populated mainly by unregenerate individuals cannot genuinely worship or honor God, as they lack the spiritual renewal needed to engage in true worship.