The experience of being gathered by God leads into the experience of being guided by God. This was not just the experience of individuals, important though this is. The key to the development of Quakerism is the understanding of corporate guidance which tests and informs individual leadings. At the heart of this is the meeting for worship where Christ, the Inward Light, is present and is met. Fox often wrote that Christ has come to teach his people himself. From this teaching comes Quaker faith & practice.
William Penn (1644-1718) was a politician, a courtier, a theologian, a prolific writer and the founder of the colony of Pennsylvania. In 1693 he wrote:
The humble, meek, merciful, just, pious, and devout souls are everywhere of one religion; and when death has taken off the mask they will know one another, though the divers liveries they wear here makes them strangers. This world is a form; our bodies are forms; and no visible acts of devotion can be without forms. But yet the less form in religion the better, since God is a Spirit; for the more mental our worship, the more adequate to the nature of God; the more silent, the more suitable to the language of a Spirit.