The Protestation which: the Knights, Citizens, and Burgesses, in the Commons house of Parliament, made, the 3d of May. 1642.  
I. A. B. do in the presence of Almighty God promise, vow & protest, to maintain & defend so far as lawfully I may with my life, power, & estate, the true reformed Protestant Religion, expressed in the Doctrine of the Church of England, against all Popery & popish Innovations within this Realm, contrary to the same Doctrine, and according to the duty of my Allegiance, his majesty's royal Person; honour & Estate, as also the power & privilege of Parliament; The lawful rights & Liberties of the subject, & every person that maketh this protestation, in with soever he shall do in the lawful pursuance of the same, And to my power, & as far as lawfully I may, I will oppose, & by all good ways & means endeavour to bring to condign punishmt, all such as shall either by force, practice, Counsels, Plots, conspiracies, or otherwise, do any thing to the contrary of any thing in this present Protestation, contained. And further, That I shall in all just & honourable ways endeavour to preserve the union & Peace between the three Kingdoms of England, Scot-land, & Ireland, And neither for hope, fear, nor other respect, shall relinquish this promise, vow, & Protestation.  
This house doth declare, that by those words, the true reformed Protestant Religion, &c is meant only the public Doctrine profess ᵈ in the said Church, so far as it is opposite to Popery, or Popish Innovations, & not the maintaining of any form of Worship, Discipline, or Government, nor any rites or Cerimonijs of the sd: Church. 〈…〉