That principle is Spiritual in- equally opposed to Erastianism and to Papacy, to the civil power dominating the Church, and to the ecclesiastical power dominating the state.
Episcopacy, Erastianism and Independency, though of little account in the assembly, were to bulk largely in England's future; while the church polity which the assembly favoured and recommended was to be almost unknown.
What is known as " Erastianism " would be better connected with the name of Grotius.
The Testimony of the King of Martyrs concerning His Kingdom (1729) is a classic repudiation of erastianism and defence of the spiritual autonomy of the church under Jesus Christ.
In England, in the 17th century, the square flat top began to be enlarged, forming a rim of thick stuff projecting beyond the close-fitting cap. This was the "square cap" so virulently denounced by the Puritans as a symbol of High Church Erastianism.