Can the fig tree, my brethren, bear olive berries?.... Every tree bears fruit, according to its kind; a fig tree produces figs, and an olive tree olive berries; a fig tree does not produce olive berries, or an olive tree figs; and neither of them both:either a vine, figs?
or fig trees, grapes; or either of them, figs and grapes:so can no fountain both yield salt water and fresh.