In the autumn of 1830, his visit to Lewisburg, Pa., is thus spoken of by Rev. J. J. Harvey, in a recent letter to Mrs. Badger:-- "His congregations were large and attentive. The sects cried out against him and his doctrine. Being young, and liberal in my feelings, I was induced, by the opposition raised against this 'great Unitarian heretic, as his enemies styled him, to go and hear for myself. From the course pursued on both sides, I soon became a regular hearer, and found my feelings strongly interested in favor of the persecuted party. Among others, he preached one discourse on the doctrine of the Trinity. This was fortunate for me, because he removed from my mind the infidelity into which the popular teaching among the Methodists and Presbyterians had well-nigh driven me. I never could understand, and therefore could not believe, their irrational and unscriptural preaching on this subject; I was, therefore, on the verge of rejecting the Bible _in toto_. But, by clear exhibitions of truth, Mr. Badger convinced me of the scriptural and the reasonable doctrine of one God, and of one Mediator between God and men; and on that subject I have never since had a doubt." From this place he proceeded to Milford, New Jersey, to attend the theological debate held in that town, December, 1830, between Rev. William McCalla, of Philadelphia, and Rev. Wm. Lane, of Ohio, on the question--"Is the man Christ Jesus the supreme and eternal God?" of which Mr. McCalla had the affirmative, and Mr. Lane the negative. This discussion, attended by a large concourse, and on the fourth day abandoned by the former gentleman, in the words, "I relinquish this debate forever," was one in which Mr. Badger took a deep interest. He was one of the Board of Moderators; and, with his peculiar facility at management, he succeeded, during the early stage of the debate, in getting Mr. McCalla and Rev. S. Clough into a contract for a new discussion of the same question, at the city of New York, at a subsequent time, a contract which Mr. McCalla, on the fourth day of the debate, took from his pocket, and tore into pieces in the presence of the great assembly, as significant of his intention not to carry out the purpose therein expressed. The coolness, foresight, and shrewdness of Mr. Badger on all such occasions were strong and serviceable traits.