'Olive trees' in the Bible

And two olive trees upon it, one from the right of the bowl and one from its left.

And I shall answer and say to him, What these two olive trees upon the right of the candlestick and upon its left?

And I shall answer the second time, and say to him, What these two twigs of the olive trees which by the hand of the two tubes of gold. emptying from them the gold?