Insomuch that we desired Titus, that as he had begun, so he would also finish in you the same grace also.
Insomuch that - As we saw the Macedonians' alacrity in giving, we could not but exhort Titus that, as we collected in Macedonia, so he in Corinth should complete the collection which he had already begun there, lest ye of wealthy Corinth should be outdone in liberality by the poor Macedonians.
As he had begun, х proeneerxato (G4278)] - 'previously begun;' namely, the collection at Corinth during his former visit. [Alford explains pro (G4253), before the Macedonians had contributed. But previously is contrasted with his subsequently finishing the collection.]
Finish in you the same grace - complete among you this act of beneficence on your part.
Also - as in other graces ye abound (2 Corinthians 8:7).