• The sermon asserts that God alone regulates corporate worship, meaning practices must be authorized by His Word rather than human invention. • The church is defined as God's house—a local, visible assembly with sacred designations, distinct from the universal church. • The speaker warns against "self-made religion," where human preferences replace divine commands, noting that such practices lack spiritual value. • God's special presence is uniquely promised to the gathered church, requiring distinct, reverent conduct unlike any other aspect of daily life.