Mrs. Duncan was then a woman between seventy and eighty years of age. Late tradition says the lot was drawn and she drew it and expected to be a victim. Mr. Chambers, though often referring to her experiences on the sea, makes no mention of the lot or of this dire extremity. Going into her cabin she gave herself to prayer, and vowed before God that if He would avert the impending blow and in mercy save her life and the ship's company she would forever consecrate herself and all that she had to His service; that she would erect a church edifice for the congregation of the Associate Reformed people in Philadelphia with whom she worshipped, and that she would give and educate her little grandson for the Gospel ministry.

Not long after this, rain fell, and the agonizing thirst of those in the ship was relieved. Soon the shout, "sail ho" was heard from the man aloft. A vessel hove in sight and rescued them all. The ship entered the Delaware river and all reached Philadelphia in safety.

True to her vows, Margaret Duncan educated her grandson John Mason Duncan to preach the good news of God. Dying Nov. 16th, 1802, she left her money by will for the erection of a house of worship, which she minutely described, specifying that it was to be of the Associate Reformed communion. By various names, the "Margaret Duncan Church," or "The Vow Church," or "Saint Margaret's Church," the brick edifice on Thirteenth street near Filbert on the west side, stood until some time in the fifties. I can remember as a little boy going to see the debris of the ruins, the piled up old brick partially cleaned of mortar, the dust and the broken bits of lime, and the great hollow place where the cellar had been. In 1875, Mr. Chambers spoke of "the little church where we worshipped so long.... It is a shame that the church was ever destroyed. However it was torn down, and we have nothing more to do with it".

His was the language of affection. As matter of cold fact, the "house was of plain brick, without the least trace of ornament and for many years was one of the gloomiest looking churches in the city. The dimensions were fifty by sixty feet." The edifice was opened for worship on the 26th of November, 1815. The dedication sermon was preached by the son of the vow, and the grandson of her who made it, Rev. John Mason Duncan. As before stated, Rev. James Gray, D.D., then with Dr. Wylie at the head of a classical school in Philadelphia, also took part.

Having been called to be the pastor of this church, Mr. Chambers surveyed his field to see what resources there were for sustaining permanent gospel work. He found no organized effort. There was no prayer-meeting, no Sunday School, not a man to lead in public prayer, and the three elders were all superannuated. The congregation was made up of humble people, poor, hard-working, industrious, with only here and there one among them who might be called rich; nor was there a family in which family worship was held. It was necessary therefore that the young man from Baltimore, who did not know ten people in Philadelphia when he first arrived, should borrow two devout men, Presbyterians, Wilfrid Hall and Hiram Ayres, to help him in meetings for social prayer. He then made application to Mr. Hall for the use of a room on Market street near what is now Seventeenth, in a district of vacant lots. Very few people were then living west of Broad street, and most of the streets now well known were not yet "cut through". He knew not whether any one would come to the meeting called for prayer, but God gave him a gracious surprise. When he arrived near the hour, "there was scarcely a spot for a human being to stand on". There and then began the Holy Spirit's workings which resulted in a whole family of Christian churches.

These prayer meetings were begun, according to due announcement, on the fourth Sunday in May. Their good influences were seen in the immediate enlargement of the church audience. By the beginning of July, there were four men ready to speak or lead in prayer. By August 1st, over forty persons, many of them young men and women, had declared their faith in Christ, and were ready for Christian work. Mr. Chambers found a friend in Rev. Dr. Stiles Ely, a New England man, the principal founder of the Jefferson Medical College, and editor of The Philadelphian. From 1801 he had been pastor of the old Pine street Church, and was at that time moderator of the Presbyterian General Assembly. As Mr. Chambers was not yet ordained, Dr. Ely preached the sermon and administered the Lord's Supper, when the new converts were received.

As Dr. Chambers told the story in 1875, "The next move was for a Sabbath School, and the marvel was with what eagerness they took hold of it ... and carried it on with vigor, procured rooms and Sabbath School scholars and teachers and entered their names, and we went on and on from that very day after the institution of the prayer meeting, and the consequence was that we very soon felt that God was with us".

When the people of the Ninth Presbyterian, or Margaret Duncan Church on Thirteenth street, met together to vote a call to John Chambers, it was under the care of the First Presbytery of Philadelphia. Of course, therefore, the call must be approved at the regular meeting of the presbytery, and only after the usual examination of the candidate. Mr. Chambers came on from Baltimore, having accepted the call, and began his work as pastor and preacher-elect on the 9th day, or second Sabbath, in May, 1825. The presbytery was to meet in October in its semi-annual gathering. By a strange coincidence this was at Newtown, near the Neshaminy stream, in Bucks county, Pa.—the field of the evangelical and revival labors of the ancestor of his betrothed, of whom more anon. Was the young preacher's imagination busy with the scenes of a century before?

The glories of autumn made lovely the landscape of this affluent agricultural county lying along the bend of the Delaware, rich in fruit, in Pennsylvania Germans, in English Quakers, and in Scotch-Irish people. Its name, that of Penn's county in England, is suggestive of the old world, and it is historically famous for being on the line of Washington's march to his great victory over the Hessians at Trenton, and through it part of Sullivan's men had moved for the chastisement of the Iroquois tribes at Newtown, near Elmira, N. Y., in 1779. Yet the historical associations uppermost in the mind of the young licentiate must have been those with the great-grandfather of his betrothed, who in this very region and near this very house of worship, had labored with Gilbert Tennant in the gospel.