Exodus 34:22

34:22 “You must observe the Feast of Weeks – the firstfruits of the harvest of wheat – and the Feast of Ingathering at the end of the year.

Leviticus 23:5

23:5 In the first month, on the fourteenth day of the month, at twilight, is a Passover offering to the Lord.

Leviticus 23:16

23:16 You must count fifty days – until the day after the seventh Sabbath – and then you must present a new grain offering to the Lord.

Leviticus 23:34

23:34 “Tell the Israelites, ‘On the fifteenth day of this seventh month is the Festival of Temporary Shelters for seven days to the Lord.

Deuteronomy 16:16

16:16 Three times a year all your males must appear before the Lord your God in the place he chooses for the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Temporary Shelters; and they must not appear before him empty-handed.