A companion to the altar: shewing the nature of the preparation required, In Order to A Worthy and Comfortable Receiving of that Holy Sacrament. Wherein Those Fears and Scruples about Eating and Drinking unworthily, and of Incurring their own Damnation thereby, Are proved groundless and unwarrantable. Unto which are added, prayers and medititations preparative to a Sacramental Preparation, according to what the Church of England requires from her Communicants.