'Olive tree' in the Bible

Yet shall there be left therein, a gleaning. As in the beating of an olive-tree, - Two-three berries in the head of the tree-top, - Four - five, among her fruitful boughs, Declareth Yahweh God of Israel.

When, thus, it shall be in the earth in the midst of the peoples, There shall be like the shaking of an olive-tree, like the going round to pick when closed is the harvest.