 He said, he sent more servants the second time. They did the same thing to them. Last of all, he sent to them his son saying, well, they'll reverence my son. Now, if you know anything about the Bible at all, you are fully aware of what's going on here. It's a reference to the number of times historically that God sent prophet after prophet after prophet to Israel, and they treated them badly and paid no attention to them at all. And then finally, God sends them his son.