Exodus 23:16
And the feast of harvest, the first fruits of your labors, which you have sown in the field: and the feast of ingathering, which is in the end of the year, when you have gathered in your labors out of the field.
Torrey's Topical Textbook—AKJV

Leviticus 23:16,17
Even to the morrow after the seventh sabbath shall you number fifty days; and you shall offer a new meat offering to the LORD.
Torrey's Topical Textbook—AKJV