Matthew Poole and continuators on 2 Corinthians 9:3

3 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 .

I did not send the Brethren so much to move you to this work, or quicken you to it, for you your selves purposed it a year ago, and shewed a forwardness in it; the motion proceeded from your selves, and you shewed a readiness to it, which gave me occasion to boast of you to the Churches of Macedonia: but I thought you might forget it, and I would not have our boasting in vain on this behalf.

And besides, I would have the work done, that your Alms might not be to gather when I come, (as he had said 1 Cor. 16.2.) but might be in a readiness to be taken and carried away, (for that is signified here by being ready) not that readiness of mind of which he had before spoken, and which he had before mentioned as what he had found in them.