When much time was spent - In sailing along the coast of Asia; in contending with the contrary winds. It is evident that when they started they had hoped to reach Italy before the dangerous time of navigating the Mediterranean should arrive. But they had been detained and embarrassed contrary to their expectation, so that they were now sailing in the most dangerous and tempestuous time of the year.
Because the fast was now already past - By the “fast” here is evidently intended the fast which occurred among the Jews on the great day of atonement. That was on the tenth of the month Tisri, which answers to a part of September and part of October. It was, therefore, the time of the autumnal equinox, and when the navigation of the Mediterranean was esteemed to be particularly dangerous, from the storms which usually occurred about that time. The ancients regarded this as a dangerous time to navigate the Mediterranean. See the proofs in Kuinoel on this place.
Paul admonished them - Paul exhorted, entreated, or persuaded them. He was somewhat accustomed to the navigation of that sea, and endeavored to persuade them not to risk the danger of sailing at that season of the year.