John Wesley on Zechariah 4:12

I answered - l went on to discourse. Unto him - The angel. What be these - Two principal branches, one in each tree, fuller of berries, and hanging over the golden pipes. Through the pipes - These were fastened to the bowl, on each side one, with a hole through the sides of the bowl, to let the oil that distilled from those olive - branches run into the bowl. Out of themselves - An emblem of supernatural grace; these branches filled from the true olive - tree, ever empty themselves, and are ever full; so are the gospel - ordinances.