From 1753 to 1755, two circumstances of a similar kind took place, which contributed greatly to strengthen him in the path he had taken; for in both these cases the persons who requested him to make their wills were so impressed by the principle upon which he refused them, and by his manner of doing it, that they bequeathed liberty to their slaves.

In the year 1756, he made a religious visit to several of the society in Long Island.  Here it was that the seed, now long fostered by the genial influences of Heaven, began to burst forth into fruit; Till this time he seems to have been a passive instrument, attending only to such circumstances as came in his way on this subject.  But now he became an active one, looking out for circumstances for the exercise of his labours.

“My mind,” says he; “was deeply engaged in this visit, both in public and private; and at several places, observing that members kept slaves, I found myself under a necessity, in a friendly way, to labour with them, on that subject, expressing, as the way opened, the inconsistency of that practice with the parity of the Christian religion, and the ill effects of it as manifested amongst us.”

In the year 1757, he felt, his mind so deeply interested on the same subject, that he resolved to travel over Maryland, Virginia, and North Carolina, in order to try to convince persons, principally in his own society, of the inconsistency of holding slaves.  He joined his brother with him in this arduous service.  Having passed the Susquehanna into Maryland, he began to experience great agitation of mind.  “Soon after I entered this province,” says he, “a deep and painful exercise came upon me, which I often had some feeling of since my mind was drawn towards these parts, and with which I had acquainted my brother, before we agreed to join as companions.”

“As the people in this and the southern provinces live much on the labour of slaves, many of whom are used hardly, my concern was that I might attend with singleness of heart to the voice of the true Shepherd, and be so supported, as to remain unmoved at the faces of men.”

It is impossible for me to follow him in detail, through this long and interesting journey, when I consider the bounds I have prescribed to myself in this work.  I shall say, therefore, what I propose to offer generally, and in a few words.

It appears that he conversed with persons occasionally, who were not of his own society, with a view of answering their arguments, and of endeavouring to evince the wickedness and impolicy of slavery.  In discoursing with these, however strenuous he might appear, he seems never to have departed from a calm, modest, and yet dignified and even friendly demeanour.  At the public meetings for discipline, held by his own society in these provinces, he endeavoured to display the same truths, and in the same manner, but particularly to the elders of his own society, exhorting them, as the most conspicuous rank, to be careful of their conduct, and to give a bright example in the liberation of their slaves.  He visited, also, families for the same purpose:  and he had the well-earned satisfaction of finding his admonitions kindly received by some, and of seeing a disposition in others to follow the advice he had given them.