Why should Christians be concerned about the purity of the church?

The church is referred to as the household of God in Ephesians 2, and maintaining its purity is crucial for reflecting God's character. Christ cleansed the temple to maintain a space conducive to worship and to uphold the holiness of God amidst distractions of self-righteousness and works-based religion. A church filled with unrepentant self-righteousness undermines the gospel message and misrepresents the nature of authentic worship. Thus, believers are called to actively seek and maintain purity within the church, ensuring it remains a true representation of Christ’s love and holiness.