The Valley Torah Scroll

In Parsha Vayera, it seems that quite surprisingly we learn that Hachnasat Orchim, having guests, is more important than being with Hashem. After all, after Avraham’s bris, Avraham left Hashem’s presence in order to greet his guests? This seems jaw-dropping: if a big rabbi comes to your house, it sounds like Halacha says that you are supposed to leave him