John Gill addresses the reasons for the Dissenters' separation from the Church of England, emphasizing that their decision is rooted in conscience rather than contention. He critiques the Church's human constitution, national form, and the corrupt doctrine preached, arguing that true churches should be congregational and consist of faithful believers. Gill also highlights issues with the administration of sacraments, the lack of biblical governance, and the Church's historical persecution of dissenters. He asserts that the Church of England fails to meet the biblical standards for a true church, leading to their justified dissent.