What is the Church? This is a fundamental question that must be answered, not in vague terms, but in clear historical and theological terms so that real Christian unity can be sought after. 

Eric's new book on Amazon: "Visible Unity: A Calling of Christ for the Church"

https://www.amazon.com/dp/B08NVGHGJ5/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=&sr=8-1