Returning to the same word, phrase, or construction, at the beginning of verses or consecutive sentences (anaphora) or throughout the text, to give rhythm, emphasis, or insistence.
In Julius Caesar
But Brutus says he was ambitious, / And Brutus is an honorable man.
The formula "Brutus is an honorable man" returns after each fact that contradicts it: the ransom of the prisoners, the tears for the poor, the refused crown. The repetition wears down the word "honorable" until it loses its meaning.