These included, for example, the Inner Mission of the Protestant Church. The Inner Mission was formed in the 19th century as a reaction to pauperisation, i.e. the mass impoverishment that affected the proletarian classes in the course of industrialisation in Germany. Protestant church members saw the problem of the social misery caused by industrialisation and social upheaval above all in the loss of Christian values. To solve the problem, Christian morals had to be raised and an environment needed to be created in which people could find their way back to God through love and charity. Therefore, it was not just about improving precarious living conditions, but also about the Christian conversion of the missionaries in the age of secularisation.
Such an environment was created by the founding of social welfare institutions, emergency homes for abandoned youths, and educational institutions for teachers of schools for the poor. The diakonia houses in particular included care for the poor and sick, infant schools as well as institutions for boys and girls in need of help (so-called Jünglingsvereine, Herbergen zur Heimat, Marthastifte). Support programmes for the resocialisation of released prison inmates were just as much a part of the Inner Mission's field of activity as the founding of so-called women's shelters and workers' colonies for the homeless and unemployed. The organisation and administration of these houses was the responsibility of the city missions.