'Day of Atonement' in the Bible

“Also the tenth day of this seventh month is the Day of Atonement; it shall be a holy convocation for you, and you shall humble yourselves [by fasting] and present an offering by fire to the Lord.

You shall not do any work on this same day, for it is the Day of Atonement, to make atonement on your behalf before the Lord your God.

Then you shall sound the ram’s horn everywhere on the tenth day of the seventh month (almost October); on the Day of Atonement you shall sound the trumpet throughout your land.

‘On the first day of the seventh month, you shall have a holy [summoned] assembly; you shall do no laborious work. It will be for you a day of blowing the trumpets (the shophar, ram’s horn).

‘Then on the tenth day of this seventh month you shall have a holy [summoned] assembly [for the Day of Atonement]; and you shall humble yourselves; you shall not do any work.

Now much time had been lost, and navigation was dangerous, because even [the time for] the fast (Day of Atonement) was already over, so Paul began to strongly warn them,