2 Corinthians 10:15-16

10:15 Not boasting of things without [our] measure, [that is], of other men’s labours; but having hope, when your faith is increased, that we shall be enlarged by you according to our rule abundantly, 10:16 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.