Jamieson, Fausset and Brown on 2 Corinthians 11:25

25. The beating by Roman magistrates at Philippi (Ac 16:23) is the only one recorded in Acts, which does not profess to give a complete journal of his life, but only a sketch of it in connection with the design of the book, namely, to give an outline of the history of the Gospel Church from its foundation at Jerusalem, to the period of its reaching Rome, the capital of the Gentile world.

once was I stoned--(Ac 14:19).

thrice ... shipwreck--before the shipwreck at Melita (Ac 27:44). Probably in some of his voyages from Tarsus, where he stayed for some time after his conversion, and from which, as being a seafaring place, he was likely to make missionary voyages to adjoining places (Ac 9:30; 11:25; Ga 1:21).

a night and a day ... in the deep--probably in part swimming or in an open boat.