Breadcrumb: Bless you

When Jacob comes to Egypt, Joseph presents him to Pharaoh. (Gen. 47:7-10) Pharaoh asks Jacob how old he is, and Jacob replies that he is 130 years old. He then blesses Pharaoh, and leaves. We have to ask ourselves here, why is Jacob blessing Pharaoh? Sure, he's an old man, but he doesn't follow the religion on the Egyptians. In his own right, he's not particularly powerful in any way. Why should it matter to Pharaoh whether Jacob blesses him or not? Perhaps Pharaoh believes in covering all his bases.