Cross reference
Acts 27:9
9 And when much time was spent, and the voyage was now dangerous, because the Fast was now already gone by, Paul admonished them,
Leviticus 23:27-29
27 Howbeit on the tenth day of this seventh month is the day of atonement: it shall be a holy convocation unto you, and ye shall afflict your souls; and ye shall offer an offering made by fire unto Jehovah.
28 And ye shall do no manner of work in that same day; for it is a day of atonement, to make atonement for you before Jehovah your God.
29 For whatsoever soul it be that shall not be afflicted in that same day; he shall be cut off from his people.
Numbers 29:7
7 And on the tenth day of this seventh month ye shall have a holy convocation; and ye shall afflict your souls: ye shall do no manner of work;
Leviticus 16:29-31
29 And it shall be a statute for ever unto you: in the seventh month, on the tenth day of the month, ye shall afflict your souls, and shall do no manner of work, the home-born, or the stranger that sojourneth among you:
30 for on this day shall atonement be made for you, to cleanse you; from all your sins shall ye be clean before Jehovah.
31 It is a sabbath of solemn rest unto you, and ye shall afflict your souls; it is a statute for ever.