For a discussion of Weber's typology with reference to the church and preaching, see Robin Gill, Prophecy and Praxis: The Social Function of the Churches (London: Marshall Morgan & Scott, 1981), 21 - 30. (religion-online.org)
The word «poor» occurs only four times in his epistles, in references to the church of Jerusalem (Gal. (religion-online.org)
He could have been speaking allegorically in reference to the church as his bride. (religion.blogs.cnn.com)