Deuteronomy 16:9
"Count off seven weeks from when the sickle is first put to standing grain.
Exodus 23:16
You are to observe the Festival of Harvest, celebrating the first fruits of your work in planting the field, and the Festival of Tabernacles at the end of the year, when you gather the fruit of your work from the field.
Exodus 34:22
"You are to observe the Festival of Weeks, the first fruits of the wheat harvest, and the Festival of Tabernacles at the turn of the year.
Acts 2:1
When the day of Pentecost was being celebrated, all of them were together in one place.
Leviticus 23:15-16
"Starting the day after the Sabbath, count for yourselves seven weeks from the day you brought the sheaf of the wave offering. They are to be complete.
Numbers 28:26-30
"On the first day of your harvest season, you are to hold a sacred assembly when you present your first fruits during the Festival of Weeks. No servile work is to be done.
Deuteronomy 16:10
Then observe the Festival of Weeks in the presence of the LORD your God by giving your tribute and the freewill offering of your hands in proportion to the manner in which the LORD your God blessed you.
Deuteronomy 16:16
"Every male must appear in the presence of the LORD your God three times a year at the place where he will choose: for the Festival of Unleavened Bread, the Festival of Seven Weeks, and the Festival of Tents. He must not appear in the LORD's presence empty-handed,
2 Chronicles 8:13
acting in compliance with the daily rule by offering them in conformity to commands issued by Moses for the Sabbaths, the New Moons, the three annual festivals (the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Tents).
1 Corinthians 16:8
However, I'll stay on in Ephesus until Pentecost,
Hebrews 2:1
For this reason we must pay closer attention to the things we have heard, or we may drift away,