When someone comes forward to say they feel called to go to the mission field (or to serve in a secular job as a believer overseas), what do you do? The church needs an on-boarding method or process and, first of all, a way of assessing both the validity of the call and the readiness of the person concerned. The church’s role in evaluating a call is critical. Sad statistics speak to the fact that one third of those who “leave the field prematurely for preventable reasons” (the definition of ‘missionary attrition’) should not have gone in the first place, or should at least have been held back till they were better prepared and equipped. So don’t assume that someone ready for the challenge of cross-cultural mission in another nation just because they feel called. The call needs to be tested, and the candidate’s maturity and readiness need to be assessed.