How do we know the doctrine of the church is true?
Answered in 2 sources
We know the doctrine of the church is true because it aligns with the Biblical foundation and the teachings of Christ as the head of the church.
The truth of the doctrine of the church is assured through its alignment with Scripture, particularly in passages such as Matthew 16:18, where Jesus declares that He will build His church and the gates of hell shall not prevail against it. The apostolic teachings further affirm the church's role as the living body of Christ, through which believers are called, gathered, and nurtured. The church's existence and mandate are rooted in God's sovereign plan for redemption, and its functions as a pillar and ground of the truth make it an indispensable part of the Christian faith, continually supporting the propagation of the gospel.
Commentary