No, I don't think it is a rhetorical device
Answer:
Reflexive
Explanation:
Yourself is a <em>reflexive</em><em> </em>pronoun
<em>PLEASE DO</em><em> </em><em>MARK ME</em><em> </em><em>AS BRAINLIEST</em><em> </em><em>IF MY</em><em> </em><em>ANSWER IS</em><em> </em><em>HELPFUL</em><em> </em><em>:</em><em>)</em><em> </em>
His purpose in delivering the sermon is to warn his congregation in particular, and presumably, by extension, his nation as a whole, that they must repent of their sinful ways and turn to God for forgiveness before it is too late.
A important part in a form of the arts