Owing to the great poverty of his mother, he could only go to Oxford as a servitor, and his career there was a very painful one. St. Thomas à Kempis, Drelincourt's Defence against Death, and Law's devotional works had all their part in kindling his piety into a flame. He was haunted with gloomy and superstitious fancies, and his religion assumed the darkest and most ascetic character. He always chose the worst food, fasted twice a week, wore woollen gloves, a patched gown, and dirty shoes, and was subject to paroxysms of a morbid devotion. He remained for hours prostrate on the ground in Christ Church Walk in the midst of the night, and continued his devotions till his hands grew black with cold. One Lent he carried his fasting to such a point that when Passion Week arrived he had hardly sufficient strength to creep upstairs, and his memory was seriously impaired. In 1733 he came in contact with Charles Wesley, who brought him into the society. To a work called The Life of God in the Soul of Man, which Charles Wesley put into his hands, he ascribed his first conviction of that doctrine of free salvation which he afterward made it the great object of his life to teach.

With the exception of a short period in which he was assisting his father at Epworth, John Wesley continued at Oxford till the death of his father, in 1735, when the society was dispersed, and the two Wesleys soon after accepted the invitation of General Oglethorpe to accompany him to the new colony of Georgia. It was on his voyage to that colony that the founder of Methodism first came in contact with the Moravians, who so deeply influenced his future life. He was surprised and somewhat humiliated at finding that they treated him as a mere novice in religion; their perfect composure during a dangerous storm made a profound impression on his mind, and he employed himself while on board ship in learning German, in order that he might converse with them. On his arrival in the colony he abandoned, after a very slight attempt, his first project of converting the Indians, and devoted himself wholly to the colonists at Savannah. They were of many different nationalities, and it is a remarkable proof of the energy and accomplishments of Wesley that, in addition to his English services, he officiated regularly in German, French, and Italian, and was at the same time engaged in learning Spanish, in order to converse with some Jewish parishioners.

His character and opinions at this time may be briefly described. He was a man who had made religion the single aim and object of his life, who was prepared to encounter for it every form of danger, discomfort, and obloquy; who devoted exclusively to it an energy of will and power of intellect that in worldly professions might have raised him to the highest positions of honor and wealth. Of his sincerity, of his self-renunciation, of his deep and fervent piety, of his almost boundless activity, there can be no question. Yet with all these qualities he was not an amiable man. He was hard, punctilious, domineering, and in a certain sense even selfish. A short time before he left England, his father, who was then an old and dying man, and who dreaded above all things that the religious fervor which he had spent the greater part of his life in kindling in his parish should dwindle after his death, entreated his son in the most pathetic terms to remove to Epworth, in which case he would probably succeed to the living, and be able to maintain his mother in her old home.

Wesley peremptorily refused to leave Oxford, and the reason he assigned was very characteristic. "The question," he said, "is not whether I could do more good to others there than here; but whether I could do more good to myself, seeing wherever I can be most holy myself there I can most promote holiness in others." "My chief motive," he wrote when starting for Georgia, "is the hope of saving my own soul. I hope to learn the true sense of the Gospel of Christ by preaching it to the heathen." He was at this time a High-Churchman of a very narrow type, full of exaggerated notions about church discipline, extremely anxious to revive obsolete rubrics, and determined to force the strictest ritualistic observances upon rude colonists, for whom of all men they were least adapted. He insisted upon adopting baptism by immersion, and refused to baptize a child whose parents objected to that form. He would not permit any non-communicant to be a sponsor, repelled one of the holiest men in the colony from the communion-table because he was a Dissenter; refused for the same reason to read the burial-service over another; made it a special object of his teaching to prevent ladies of his congregation from wearing any gold ornament or any rich dress, and succeeded in inducing Oglethorpe to issue an order forbidding any colonist from throwing a line or firing a gun on Sunday. His sermons, it was complained, were all satires on particular persons. He insisted upon weekly communions, desired to rebaptize Dissenters who abandoned their Nonconformity, and exercised his pastoral duties in such a manner that he was accused of meddling in every quarrel and prying into every family.

A more unpropitious commencement for a great career could hardly be conceived. Wesley returned to England in bad health and low spirits. He redoubled his austerities and his zeal in teaching, and he was tortured by doubts about the reality of his faith. It was at this time and in this state of mind that he came in contact with Peter Boehler, a Moravian teacher, whose calm and concentrated enthusiasm, united with unusual mental powers, gained a complete ascendency over his mind. From him Wesley for the first time learned that form of the doctrine of justification by faith which he afterward regarded as the fundamental tenet of Christianity. He had long held that in order to be a real Christian it was necessary to live a life wholly differing from that of the world around him, and that such a renewal of life could only be effected by the operation of the divine Spirit; and he does not appear to have had serious difficulties about the doctrine of imputed righteousness, although the ordinary evangelical doctrine on this matter was emphatically repudiated and denounced by Law.

From Boehler he first learned to believe that every man, no matter how moral, how pious, or how orthodox he may be, is in a state of damnation, until, by a supernatural and instantaneous process wholly unlike that of human reasoning, the conviction flashes upon his mind that the sacrifice of Christ has been applied to and has expiated his sins; that this supernatural and personal conviction or illumination is what is meant by saving faith, and that it is inseparably accompanied by an absolute assurance of salvation and by a complete dominion over sin. It cannot exist where there is not a sense of the pardon of all past and of freedom from all present sins. It is impossible that he who has experienced it should be in serious and lasting doubt as to the fact; for its fruits are constant peace—not one uneasy thought; "freedom from sin—not one unholy desire." Repentance and fruits meet for repentance, such as the forgiveness of those who have offended us, ceasing from evil and doing good, may precede this faith, but good works in the theological sense of the term spring from, and therefore can only follow, faith.

Such, as clearly as I can state it, was the fundamental doctrine which Wesley adopted from the Moravians. His mind was now thrown, through causes very susceptible of a natural explanation, into an exceedingly excited and abnormal condition, and he has himself chronicled with great minuteness in his journal the incidents that follow. On Sunday, March 5, 1738, he tells us that Boehler first fully convinced him of the want of that supernatural faith which alone could save. The shock was very great, and the first impulse of Wesley was to abstain from preaching, but his new master dissuaded him, saying: "Preach faith till you have it; and then because you have faith you will preach faith." He followed the advice, and several weeks passed in a state of extreme religious excitement, broken, however, by strange fits of "indifference, dulness, and coldness." While still believing himself to be in a state of damnation, he preached the new doctrine with such passionate fervor that he was excluded from pulpit after pulpit. He preached to the criminals in the jails. He visited, under the superintendence of Boehler, some persons who professed to have undergone the instantaneous and supernatural illumination. He addressed the passengers whom he met on the roads or at the public tables in the inns. On one occasion, at Birmingham, he abstained from doing so, and he relates, with his usual imperturbable confidence, that a heavy hailstorm which he afterward encountered was a divine judgment sent to punish him for his neglect.

This condition could not last long. At length, on May 24th, a day which he ever after looked back upon as the most momentous in his life—the cloud was dispelled. Early in the morning, according to his usual custom, he opened the Bible at random, seeking for a divine guidance, and his eye lighted on the words, "There are given unto us exceeding great and precious promises, even that we would be partakers of the divine nature." Before he left the house he again consulted the oracle, and the first words he read were, "Thou art not far from the kingdom of God." In the afternoon he attended service in St. Paul's Cathedral, and the anthem, to his highly wrought imagination, seemed a repetition of the same hope. The sequel may be told in his own words: "In the evening I went very unwillingly to a society in Aldersgate Street, where one was reading Luther's preface to the Epistle to the Romans. About a quarter before nine, while he was describing the change which God works in the heart through faith in Christ, I felt my heart strangely warmed; I felt I did trust in Christ, Christ alone for salvation; and an assurance was given me that he had taken away my sins, even mine, and saved me from the law of sin and death. I began to pray with all my might for those who had in a more especial manner despitefully used me and persecuted me. I then testified openly to all what I now first felt in my heart."

Pictures of this kind are not uncommon in the lives of religious enthusiasts, but they usually have a very limited interest and importance. It is, however, scarcely an exaggeration to say that the scene which took place at that humble meeting in Aldersgate Street forms an epoch in English history. The conviction which then flashed upon one of the most powerful and most active intellects in England is the true source of English Methodism. Shortly before this, Charles Wesley, who had also fallen completely under the influence of Boehler, had passed through a similar change; and Whitefield, without ever adopting the dangerous doctrine of perfection which was so prominent in the Methodist teaching, was at a still earlier period an ardent preacher of justification by faith of the new birth. It was characteristic of John Wesley that ten days before his conversion he wrote a long, petulant, and dictatorial letter to his old master, William Law, reproaching him with having kept back from him the fundamental doctrine of Christianity, and intimating in strong and discourteous language his own conviction, and that of Boehler, that the spiritual condition of Law was a very dangerous one.

It was no less characteristic of the indefatigable energy which formed another and a better side of his nature, that immediately after this change he started on a pilgrimage to Herrnhut, the head-quarters of Moravianism, in order that he might study to the best advantage what he now regarded as the purest type of a Christian church. He returned objecting to many things, but more than ever convinced of his new doctrine, and more than ever resolved to spend his life in diffusing it. In the course of 1738 the chief elements of the movement were already formed. Whitefield had returned from Georgia. Charles Wesley had begun to preach the doctrine with extraordinary effect to the criminals in Newgate and from every pulpit into which he was admitted. Methodist societies had already sprung up under Moravian influence. The design of each was to be a church within a church, a seed-plot of a more fervent piety, the centre of a stricter discipline and a more energetic propagandism, than existed in religious communities at large.