Dr. Senor's interest in teaching Bible Students dates back to 1903 and perhaps before. He stated in one of the periodicals of this movement the following: "It is now about five years since I entered the light of the Present Truth, and the Lord has blessed me with the privilege of having the six volumes of the Dawn, and the Towers of 1890, which I have carefully traveled through, and from which I received a Bible Study course, an acquaintance of Heavenly Father and our dear Lord, and the plans and the goals and my relationship to that, sufficient thanks for which it would be difficult for me to put in words "(Zion's Watch Tower and Herald of Christ's Presence, July 1, 1908, p.207, R.4203). The baptism of "Brother SD Senor" is between the years 1903 and 1907. His name appears for the first time in the literature of the Watch Tower Society, during a convention in Norfolk in the state of Virginia in 1907. On this occasion, he delivered a speech (Ibid., November 1, 1907, p.325, R.4081 / JONES Leslie W., Remembrance (Notes from) Watch Tower Bible and Tract Society's Conventions, Part II, Chicago, 1907, p. .162). A year later, a meeting of Bible Students was held in St Joseph on July 16, 1908. After this event, Dr. Senor welcomed Pastor Russell (Zion's Watch Tower and Herald of Christ's Presence, 15 August 1908, p.244, R.4221 / St. Joseph Gazette, St Joseph: State of Missouri, July 15, 1908, p.2). Associated with the ecclesia of his city, he also realized in 1908, the following "vow" before the Lord: "I swear to you that I will be on the alert to resist all that is related to Spiritism and Occultism, and reminding me that there are only the two masters, I will resist these pitfalls in all reasonable ways, as being of the Adversary "(Zion's Watch Tower and Herald of Christ's Presence, August 15, 1908, p. 254, R.4228). At that time, the congregation of Samuel D. Senor was composed of 17 members, including his wife Jessie T. (1871-1971). From October 1908, he served as Pilgrim alongside twenty brothers. During the six years of his ministry, he made more than 500 visits to ecclesiases across 22 US states. In his sermons he was portrayed in the newspapers as "an energetic speaker, a great thinker, and a man. vast knowledge "(The Burlingame Enterprise, Burlingame: State of Kansas, September 25, 1913