The substantial attention of the analysis on the use passive sentences have generally been paid to the style. Although grammatical categories can be seen as an interesting area for stylistic analysis, the focus usually circles around the grammatical phenomena of the roles of the actor, action, patient, location, and so on. Similarly, in the analysis of lexical choice, diction is generally defined as choosing the right words in a speech or writing that should be accurate, appropriate, and understandable so that nothing will confuse an audience. In article, it is argued that when combined in such a way in a speech, grammatical phenomena of passivization and political diction related to naming can produce fruitful rhetorical effects in building heroes in the people’s minds to obtain political assent in a speech. Specifically, the diction by naming and labelling the actor in the certain expressions will be highlighted. It is found that that the way FDR makes use of both passives combined with political dictions have been effective in his Declaration of War Against Japanese Empire.