Leviticus 23:15

Then shall ye keep count to yourselves from the morrow of the sabbath, from the day ye brought in the wave sheaf, - seven sabbaths complete, shall there be:

Exodus 34:22

And the festival of weeks, shalt thou make to thee, the firstfruits of the wheat harvest, - and the festival of ingathering, at the closing in of the year:

Leviticus 23:10-11

Speak unto the sons of Israel, and thou shalt say unto them: - When ye enter into the land which, I, am giving you, and ye reap the harvest thereof, then shall ye bring in a sheaf of the first-ripe corn of your harvest, unto the priest;

Leviticus 25:8

And thou shalt count to thee seven weeks of years, seven years, seven times, - so shall the days of the seven weeks of years become to thee forty-nine years.

Deuteronomy 16:9-10

Seven weeks, shalt thou count unto thee, - from the beginning of thrusting in the sickle into the standing corn, shalt thou begin to count, seven weeks.

Numbers 28:26

And on the day of firstfruits when ye bring near a new meal-offering unto Yahweh, in your weeks, a holy convocation shall there be unto you, no laborious work, shall ye do;

Treasury of Scripture Knowledge

Summary

And ye shall count unto you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave offering; seven sabbaths shall be complete:

Bible References

General references

Leviticus 23:10
Speak unto the sons of Israel, and thou shalt say unto them: - When ye enter into the land which, I, am giving you, and ye reap the harvest thereof, then shall ye bring in a sheaf of the first-ripe corn of your harvest, unto the priest;
Leviticus 25:8
And thou shalt count to thee seven weeks of years, seven years, seven times, - so shall the days of the seven weeks of years become to thee forty-nine years.
Exodus 34:22
And the festival of weeks, shalt thou make to thee, the firstfruits of the wheat harvest, - and the festival of ingathering, at the closing in of the year:
Deuteronomy 16:9
Seven weeks, shalt thou count unto thee, - from the beginning of thrusting in the sickle into the standing corn, shalt thou begin to count, seven weeks.