The greatest challenge of missionary-work is, in my opinion, as I wrote here many years ago....the missionary-home. Living together as strangers, from different cultures is just not easy, and no course ( that's what Gilead is when you are used to wordly education), can prepare you to that.
Day after day living with people who never had learned how to handle a fork or/and knife, speaking loud with their mouth full of rice or bread, instead of taking a shower spraying " old spice" is hard.
Then morning worship, in the local language, hearing the strong accent of Some of the biggest countries in the world in Spanish, after years and years making the same mistakes and errors....thanks who ever to be liberated of that.Than the art of cooking of some, horrible.
Anyway this is off-topic I know.