The Westminster Larger Catechism (1648)

It is required of them that receive the sacrament of the Lord’ s supper, that, during the time of the administration of it, with all holy reverence and attention they wait upon God in that ordinance,¹ diligently observe the sacramental elements and actions,² heedfully discern the Lord’ s body,³ and affectionately meditate on his death and sufferings,⁴ and thereby stir up themselves to a vigorous exercise of their graces;⁵ in judging themselves,⁶ and sorrowing for sin;⁷ in earnest hungering and thirsting after Christ,⁸ feeding on him by faith,⁹ receiving of his fullness,¹⁰ trusting in his merits,¹¹ rejoicing in his love,¹² giving thanks for his grace;¹³ in renewing of their covenant with God,¹⁴ and love to all the saints.¹⁵