{Now I rejoice} (
un chair(935c)). Now that Titus has come and
told him the good news from Corinth ( 2:12f. ). This was the
occasion of the noble outburst in  2:12-6:10 . {Unto repentance}
(eis metanoian). Note the sharp difference here between
"sorrow" (lup(885c)) which is merely another form of metamelomai
(regret, remorse) and "repentance" (metanoia) or change of mind
and life. It is a linguistic and theological tragedy that we have
to go on using "repentance" for metanoia. But observe that the
"sorrow" has led to "repentance" and was not Itself the
repentance. {After a godly sort} (kata theon). In God's way.
"God's way as opposed to man's way and the devil's way"
(Plummer). It was not mere sorrow, but a change in their attitude
that counted. {That ye might suffer loss by us in nothing} (hina
en m(8864)eni z(886d)i(9374)h(8874)e ex hum(936e)). Purpose clause with hina and
first aorist passive subjunctive of z(886d)io(935c), old verb to suffer
damage. See on 烘t 16:26|. This was God's intention and so he
overruled their sorrow to good.