and even so as to evangelize in those places that are beyond you, not in order to glory in the measure of others, but rather in those things which have already been prepared
Other versions
King James Version
To preach the gospel in the regions beyond you, and not to boast in another man's line of things made ready to our hand. English Standard Version
so that we may preach the gospel in lands beyond you, without boasting of work already done in another's area of influence.New International Version
so that we can preach the gospel in the regions beyond you. For we do not want to boast about work already done in another man's territory.