Leviticus 23:29

then make an offering by fire to Yahweh, a burnt offering or a sacrifice to fulfill a special vow, or as a freewill offering or in your appointed times, to make a soothing aroma to Yahweh, from the herd or from the flock.

‘Then on the tenth day of this seventh month you shall have a holy convocation, and you shall humble yourselves; you shall not do any work.

Then I called for a fast there at the river of Ahava, that we might humble ourselves before our God to seek from Him a direct journey for us, our little ones, and all our possessions.

“And it shall be the prince’s part to provide the burnt offerings, the grain offerings, and the drink offerings, at the feasts, on the new moons, and on the sabbaths, at all the appointed times of the house of Israel; he shall provide the sin offering, the grain offering, the burnt offering, and the peace offerings, to make atonement for the house of Israel.”

‘And it will be that every soul that does not heed that prophet shall be utterly destroyed from among the people.’

And when considerable time had passed and the voyage was now dangerous, since even the Fast was already over, Paul began to advise them,