Yoma 71a-72a
Appropriate forms of address depend upon the context of the meeting \u2022 How do sages take leave of one another? \u2022 The predilection of Torah scholars is for the finest wines \u2022 The honor due Torah scholars exceeds the honor due the High Priest on Yom Kippur \u2022 Who may seek Divine guidance through the High Priest enquiry of the Urim V'Tumim? \u2022 Priestly garments must be fashioned in precise ways