This document provides an overview of ecclesiology, the doctrine of the church, according to the beliefs of International Bible Baptist Church in Bangkok, Thailand. It discusses the origins and meanings of the words "church" and "ekklesia," defines the local church, and describes its founding by Jesus Christ and empowering at Pentecost. It examines biblical symbols of the church like the body of Christ and bride of Christ. It outlines the officers of a local church like pastors, bishops, and elders, as well as the two ordinances of baptism and Lord's Supper. The document aims to teach the church's constitution, ordinances, activities including worship and work.