en_tn/2ti/04/05.md

be sober-minded

Paul wants Timothy to think correctly about everything, and he speaks about him as if he wanted him to be sober, that is, not drunk with wine. Alternate translation: "think clearly" (See: rc://en/ta/man/jit/figs-metaphor)

the work of an evangelist

This means to tell people about who Jesus is, what he did for them, and how they are to live for him.