First-fruits
    The first-fruits of the ground were offered unto God just as the
    first-born of man and animals.

      The law required, (1.) That on the morrow after the Passover
    Sabbath a sheaf of new corn should be waved by the priest before
    the altar (Lev. 23:5, 6, 10, 12; 2:12).

      (2.) That at the feast of Pentecost two loaves of leavened
    bread, made from the new flour, were to be waved in like manner
    (Lev. 23:15, 17; Num. 28:26).

      (3.) The feast of Tabernacles was an acknowledgement that the
    fruits of the harvest were from the Lord (Ex. 23:16; 34:22).

      (4.) Every individual, besides, was required to consecrate to
    God a portion of the first-fruits of the land (Ex. 22:29; 23:19;
    34:26; Num. 15:20, 21).

      (5.) The law enjoined that no fruit was to be gathered from
    newly-planted fruit-trees for the first three years, and that
    the first-fruits of the fourth year were to be consecrated to
    the Lord (Lev. 19:23-25). Jeremiah (2:3) alludes to the
    ordinance of "first-fruits," and hence he must have been
    acquainted with the books of Exodus, Leviticus, and Numbers,
    where the laws regarding it are recorded.