'Olive branches' in the Bible

And that they were to give out an order, and make it public in all their towns and in Jerusalem, saying, Go out to the mountain and get olive branches and branches of field olives and of myrtle, and palm branches and branches of thick trees, to make tents, as it says in the book.

And answering a second time, I said to him, What are these two olive branches, through whose gold pipes the oil is drained out?