In November 1876, Vincent drew a sketch of the church in Turnham Green at the bottom of a letter to his brother Theo. He called it "Mr. Jones's church" because Rev. Thomas Slade-Jones (1829–1883), for whom Vincent worked, was the pastor there. The church had been founded in September 1875 and was built entirely out of corrugated iron, as was not unusual at the time. Vincent regularly attended services and evening readings there and also taught Sunday school. The situation evidently suited him; he wrote to his brother:
On Thursday 16 November 1876, a month after his first sermon at the Wesleyan Methodist church, Vincent was given an opportunity to preach in Turnham Green. Things evidently went well, for at their next meeting, the church leaders officially took him on as a colleague. With Vincent becoming increasingly involved in the church, a new assistant instructor was hired to take over his duties at Jones’s school, where he had been teaching.