Jamieson, Fausset and Brown on 2 Corinthians 11:16

16. I say again--again taking up from 2Co 11:1 the anticipatory apology for his boasting.

if otherwise--but if ye will not grant this; if ye will think me a fool.

yet as a fool--"yet even as a fool receive me"; grant me the indulgent hearing conceded even to one suspected of folly. The Greek denotes one who does not rightly use his mental powers; not having the idea of blame necessarily attached to it; one deceived by foolish vanities, yet boasting himself [Tittmann], (2Co 11:17, 19).

that I--The oldest manuscripts read, "that I, too," namely, as well as they, may boast myself.