I think I always knew it, but my friend and the person who has overseen most of my work in Ghana, Paul Opoku-Mensah, clarified it for me:
Missionaries are temporary
Or as I like to say, missionaries are made for leaving. By that, I do not mean that they are forced to leave. Rather, I mean that missionaries are temporary by design. Leaving is what we are built for. We see this clearly in Jesus ministry which lasted roughly three years. We see it in the Apostle Paul’s missionary journies during which he went many places, stayed some time, then moved on. But when I say that missionaries are made to leave, I am not speaking primarily about the length of their ministry, but more about the conditions that end it. A missionary might move to an area to translate the Bible into the language there, then move on or return home when the translation is complete. That might take quite a long time, but it is still destined to end if and when the missionary succeeds. A mission that has not ended is, therefore, one which has not yet succeeded.
There’s an irony in the fact that a mission which succeeds creates the conditions for its own demise. But it goes further than that. A mission that does not end stifles new life.
Paul Opoku-Mensah taught me that it is good and natural that missionaries have different ideas than those who come to faith through their ministry. The missionary who founded The Church of Pentecost in Ghana, James McKoewn, only did evangelism and discipleship, but he was pleased when, after his retirement, the very successful church he planted branched out into medical work, schools and more. He saw these changes as a sign of his success. But many missionaries resist changes to ministries they start. I remember a person highly respected among his people telling us that a particular missionary had to go. The missionary had not done anything wrong except keep control too long.
If a missionary translates the Bible for people, those people may develop their own vision for what comes next. They will want to make sure that the translation is reprinted and on sale for the next generations. They might want to have their language used in the first few years of primary school to help their children get better grades. They may want lots of literacy classes. Or maybe they will want to translate their church’s liturgy. There’s no telling what things they will want to do to that the missionary didn’t do.
In order for this to happen well, the missionary must leave, or at least relinquish his or her hold on the ministry, so others can take it new directions.
To really succeed, a missionary must create the conditions that bring an end to his or her ministry.