'Feast' in the Bible

“And I will punish her for the [feast] days of the Baals,When she used to offer sacrifices and burn incense to themAnd adorn herself with her earrings and nose rings and her jewelry,And follow her lovers, so that she forgot Me,” says the Lord.

What will you do on the day of the appointed festivalAnd on the day of the feast of the Lord [when you are in exile]?

But I have been the Lord your God since [you became a nation in] the land of Egypt;I will make you live in tents again,As in the days of the appointed and solemn festival.