Jacob 5:34-44
The root of the tame olive tree is the covenant of Abraham. That is what supplies the strength and energy which brings forth wild fruit in abundance if the wild branches which have been grafted in are not balanced with tame branches. Unfortunately that wild fruit will eventually kill the root if it is not replaced with good fruit. Similarly, the tame branches when removed from their mother root, eventually bring forth bad fruit and die away unless they are grafted back in.