'First fruits' in the Bible

"Speak unto the children of Israel, and say unto them, 'When ye be come into the land which I give unto you and reap down your harvest, ye shall bring a sheaf of the first fruits of your harvest unto the priest,

And ye shall bring out of your habitations two wave loaves made of two tenth deals of fine flour, leavened and baken, for first fruits unto the LORD.

And the priest shall wave them with the bread of the first fruits before the LORD, and with the two lambs. And they shall be holy unto the LORD, and be the priest's.