From the conflict with the enemies who a few years before had threatened her existence, the polemics of the church of England now turned to resist the unwelcome ally who menaced her repose. Bishop Warburton led the van, and behind him many a mitred front scowled on the audacious innovator. Divested of the logomachies which chiefly engaged the attention of the disputants, the controversy between Whitefield and the bishops lay in a narrow compass. It being mutually conceded that the virtues of the Christian life can result only from certain divine impulses, and that to lay a claim to this holy inspiration when its legitimate fruits are wanting, is a fatal delusion, he maintained, and they denied, that the person who is the subject of this sacred influence has within his own bosom an independent attestation of its reality. So abstruse a debate required the zest of some more pungent ingredients, and the polemics with whom Whitefield had to do were not such sciolists in their calling as to be ignorant of the necessity of riveting upon him some epithet at once opprobrious and vague. While therefore milder spirits arraigned him as an _enthusiast_, Warburton, with constitutional energy of invective, denounced him as a _fanatic_. In vain Whitefield demanded a definition of these reproachful terms. To have fixed their meaning would have been to blunt their edge. They afforded a solution, at once compendious, obscure, and repulsive, of whatever was remarkable in his character, and have been associated with his name from that time to the present. The spots on which Whitefield now began, in his own language, "to take the field," and publicly to erect the standard of the Redeemer's cross, are well known. Moorfields, then a place of general rendezvous and recreation from the crowded city, Kennington Common then about two, and Blackheath about five miles from London, were the favorite sites to which he loved to resort, and "open his mouth boldly" to listening thousands, in honor of his crucified and glorified Lord. Recording his first engagement of this kind in his diary of Sabbath evening, April 29, 1739, he writes, "Begun to be yet more vile this day, for I preached at Moorfields to an exceeding great multitude; and at five in the evening went and preached at Kennington Common, where upwards of twenty thousand were supposed to be present. The wind being for me, it carried my voice to the extreme part of my audience. All stood attentive, and joined in the psalm and the Lord's prayer so regularly, that I scarce ever preached with more quietness in a church. Many were much affected. "'For this let men revile my name, I'll shun no cross, I'll fear no shame; All hail, reproach, and welcome pain, Only thy terrors, Lord, restrain.'"