A Sermon Preached to the Right Honourable the Lord Mayor, and Court of Aldermen of the City of London, at Their Anniversary Meeting on Easter Monday April 1652. at the Spittle. Wherein the Unity of the Saints with Christ, the Head, and Especially with the Church, the Body; with the Duties Thence Arising, are Endeavoured to Bee Cleared. Tending to Heale Our Rents and Divisions. By Stephen Marshal B.D. and Minister of the Gospel at Finchingfield in Essex