Rabbi Ḥanina said in the name of Rabbi Pinḥas: It mentions the patriarchs eighteen times in the Torah, and corresponding to it, the Sages instituted the eighteen blessings in prayer. Were a person to say to you: ‘There are nineteen,’3Nineteen times that the patriarchs are mentioned in the Torah. say to him: “Behold, the Lord was standing over him […God of Abraham your father, and the God of Isaac]” is not included in the tally.4Because Jacob is not mentioned in the verse.
Were a person to say to you: ‘There are seventeen,’ say to him: “And let my name and the name of my fathers, Abraham and Isaac, be called upon them”5Because although Jacob is not mentioned by name, he is the speaker of this verse and he says: “My name.” (Genesis 48:16) is one of them. “The land upon which you lie, to you I will give it, and to your descendants” – Rabbi Shimon said in the name of bar Kappara: He folded it like a notepad and placed it under his head, like a person who says: ‘Whatever is under your head is yours.’ Rav Huna said in the name of Rabbi Elazar: Provided that he will be buried there.