Excerpts from the Blasphemy Act under which the warrant was issued against Fox. The ‘two witness’ clause explains the grounds on which Judge Fell threw out (‘superseded’) the warrant.

9 August, 1650.
An Act against several Atheistical, Blasphemous and Execrable Opinions, derogatory to the honor of God, and destructive to humane Society.

... That all and every person and persons (not distempered with sickness, or distracted in brain) who shall presume avowedly in words to profess, or shall by writing proceed to affirm and maintain him or her self, or any other meer Creature, to be very God, or to be Infinite or Almighty, or in Honor, Excellency, Majesty and Power to be equal, and the same with the true God ...

All and every person or persons so avowedly professing, maintaining or publishing as aforesaid, the aforesaid Atheistical, Blasphemous or Execrable Opinions, or any of them, upon complaint and proof made of the same in any the cases aforesaid, before any one or more Justice or Justices of Peace, Major or other Head-Officer of any City or Town Corporate by the Oath of two or more Witnesses (which Oath the said Justice or Justices and Head-Officer have hereby power to administer in all the cases aforesaid) or Confession of the said persons, the party so convicted or confessing, shall by the said Justice or Justices, or other Head-Officer committed to Prison or to the House of Correction, for the space of six moneths, without Bail or Mainprize, and until he or she shall have put in sufficient Sureties to be of good behavior for the space of one whole year.