The term "doxolojer" was used in Mark Twain's The Adventures of Huckleberry Finn. We think that it was used to describe a man of doxologies (doxology: an expression of praise to God).
In Christian worship there are three common doxologies:
1. The greater doxology, or Gloria in Excelsis
2. The lesser doxology, or Gloria Patri
3. Metrical doxologies (usually variations upon the Gloria Patri)
Most Protestant churches use this form, often in conjunction with the presentation of tithes and offerings. Learn more about these common doxologies at Britannica.com.