The period of the 19th century and the beginning of the 20th century was a very profitable period for Łódź and consequently for ecclesial structures. Factories and enterprises, which were set up in this period, attracted to Łódź many people from various parts of the continent, including many Protestants. This led to the building of four churches (Holy Trinity’s, St. John’s, St. Matthew’s, St. Michael’s) which up till now (although in new circumstances) exist in our city. At the same time active parishes were formed around them and gathered evangelicals in Łódź. Despite organizational difficulties this period was the time of development for protestant community in Łódź. This period ended with the outbreak of the war in 1939 and its consequences, i.e. deportations in 1945.