In 1716 Griffith Jones was made the rector of Llanddowror Church where he remained for the rest of his life. In 1731, he began to organise circulating schools in Carmarthenshire, influenced by his learning and the ideology of the Society for the Promotion of Christian Knowledge (SPCK) of which he was a member. Jones was inspired to set up these reading schools so that the common people might read the Bible and, in so doing, learn things necessary for their salvation.