Sentence:  ... Blanckenburg pointed out that one of the differences between the epic and the novel was that the classic epic was a "heroic poem" <WSD>besinging</WSD> the "public acts and events", the "actions of the citizen"; ... 
Meaning of the word marked with <WSD> tags:  To sing of or sing about; celebrate in song or poetry; sing the praises of; praise; laud.