I did not myself burden you (egw ou katebarhsa uma). First aorist active of late verb katabarew, to press a burden down on one. Only here in N.T. Crafty (panourgo). Old word from pan, all, and ergo, to do anything (good or bad). Good sense is skilful, bad sense cunning. Only here in N.T. and Paul is quoting the word from his enemies. With guile (dolwi). Instrumental case of dolo, bait to catch fish with. The enemies of Paul said that he was raising this big collection for himself. Moffatt has done well to put these charges in quotation marks to make it plain to readers that Paul is ironical.