2 Corinthians 9:3 in the King James Version
Yet have I sent the brethren, lest our boasting of you should be in vain in this behalf; that, as I said, ye may be ready:
Context
2 for I know your readiness, of which I boast on your behalf to those of Macedonia, that Achaia has been prepared for the past year. Your zeal has stirred up very many of them.
3 But I have sent the brothers so that our boasting on your behalf may not be in vain in this respect, that, just as I said, you may be prepared,
4 lest by any means, if anyone from Macedonia comes there with me and finds you unprepared, we (to say nothing of you) would be disappointed in this confident boasting.