A.T. Robertson Commentary 2 Corinthians 9:3

"But I have sent the brethren, that our glorying on your behalf may not be made void in this respect; that, even as I said, ye may be prepared:" — 2 Corinthians 9:3 (ASV)

I sent (επεμψα). Not literary plural with this epistolary aorist as in 18,22.

That ye may be prepared (ινα παρεσκευασμενο ητε). Perfect passive subjunctive in the final clause, "that ye may really be prepared," "as I said" (καθως ελεγον) and not just say that ye are prepared. Paul's very syntax tells against them.