The desire for church leadership is a good thing. The text uses two strong words for that desire. Who in their right mind would want it if God wasn't prompting them?
The devil is mentioned twice, personally, and once the word is used as an adjective ("slander", same word). Apparently, the devil has an interest in church leadership!
I admit, I generally read this for the qualifications of leaders and quit paying attention after that. Paul said, I wrote so you would know how to conduct yourself in the household of God. This is about how to organize and live in a church family.
The church itself is a type of household community. The church, too, is the pillar and foundation of the truth. How you conduct yourself has important ramifications.