'Olive tree' in the Bible

A land of wheat and barley and the vine and the fig tree and the pomegranate, a land of the olive tree, of oil and honey;

When thou shakest thine olive-tree, thou shalt not go over the boughs again; it shall be for the stranger, for the fatherless, and for the widow.

Olive-trees shalt thou have throughout all thy borders, but thou shalt not anoint thyself with oil; for thine olive-tree shall cast its fruit.