Numbers 28:26

'And in the day of the first-fruits, in your bringing near a new present to Jehovah, in your weeks, a holy convocation ye have; ye do no servile work;

Exodus 23:16

and the Feast of Harvest, the first fruits of thy works which thou sowest in the field; and the Feast of the In-Gathering, in the outgoing of the year, in thy gathering thy works out of the field.

Exodus 34:22

'And a feast of weeks thou dost observe for thyself; first-fruits of wheat-harvest; and the feast of in-gathering, at the revolution of the year.

Leviticus 23:10

'Speak unto the sons of Israel, and thou hast said unto them, When ye come in unto the land which I am giving to you, and have reaped its harvest, and have brought in the sheaf, the beginning of your harvest unto the priest,

Leviticus 23:15-21

'And ye have numbered to you from the morrow of the sabbath, from the day of your bringing in the sheaf of the wave-offering: they are seven perfect sabbaths;

Deuteronomy 16:9-11

'Seven weeks thou dost number to thee; from the beginning of the sickle among the standing corn thou dost begin to number seven weeks,

Numbers 28:18

in the first day is an holy convocation, ye do no servile work,

Acts 2:1-13

And in the day of the Pentecost being fulfilled, they were all with one accord at the same place,

1 Corinthians 15:20

And now, Christ hath risen out of the dead -- the first-fruits of those sleeping he became,

James 1:18

having counselled, He did beget us with a word of truth, for our being a certain first-fruit of His creatures.

Treasury of Scripture Knowledge

Summary

Also in the day of the firstfruits, when ye bring a new meat offering unto the LORD, after your weeks be out, ye shall have an holy convocation; ye shall do no servile work:

General references

Bible References

In the day

Exodus 23:16
and the Feast of Harvest, the first fruits of thy works which thou sowest in the field; and the Feast of the In-Gathering, in the outgoing of the year, in thy gathering thy works out of the field.
Exodus 34:22
'And a feast of weeks thou dost observe for thyself; first-fruits of wheat-harvest; and the feast of in-gathering, at the revolution of the year.
Leviticus 23:10
'Speak unto the sons of Israel, and thou hast said unto them, When ye come in unto the land which I am giving to you, and have reaped its harvest, and have brought in the sheaf, the beginning of your harvest unto the priest,
Deuteronomy 16:9
'Seven weeks thou dost number to thee; from the beginning of the sickle among the standing corn thou dost begin to number seven weeks,
Acts 2:1
And in the day of the Pentecost being fulfilled, they were all with one accord at the same place,
1 Corinthians 15:20
And now, Christ hath risen out of the dead -- the first-fruits of those sleeping he became,
James 1:18
having counselled, He did beget us with a word of truth, for our being a certain first-fruit of His creatures.

General references

Deuteronomy 16:9
'Seven weeks thou dost number to thee; from the beginning of the sickle among the standing corn thou dost begin to number seven weeks,