What does the Bible teach about the church's purity?

In Scripture, the church is portrayed as being perfectly pure and without blemish, particularly through Christ's redemptive work. Ephesians 5:27 expresses, 'that He might present it to Himself a glorious church, not having spot or wrinkle, but that it should be holy and without blemish.' This emphasizes that the church's purity is derived from Christ's righteousness, which is imputed to believers. The continuous cleansing and sanctification that believers undergo confirm their status before God as 'holy, unblameable, and unreprovable' (Colossians 1:22) in His sight, showcasing the transformative power of His love in their lives.