Leviticus 23:24-26 Modern English Version (MEV)
24 Speak to the children of Israel, saying: In the seventh month, on the first day of the month, you shall have a sabbath, a memorial with the blowing of trumpets, a holy convocation. 25 You shall do no regular work, and you shall offer a food offering made by fire to the Lord.
The Day of Atonement
26 The Lord spoke to Moses, saying: