What does the Bible say about the true church of Jesus Christ?

The concept of the true church is essential in scripture, as embodied in Ephesians 2:19-22 and 1 Timothy 3:15. The true church, often referred to as the bride of Christ, is identified through correct doctrine and practice as established by Christ and communicated through the apostles. Any assembly calling itself a church must align with the doctrines of Christ and carry out the ordinances He instituted, such as baptism and the Lord's Supper. Those who deviate from these teachings are characterized as part of a 'harlot church', which the Bible warns believers to avoid.