Musar sur Chroniques 2 3:18

This particular act of הכנסת אורחים on the part of our patriarch Abraham involved three profound truths, and during the meal Abraham and Sarah were already alerted to the eventual עקדת יצחק, binding of Isaac on Mount Moriah. When Rashi in Genesis 22,2 mentions three different reasons why the Mountain is called Mount Moriah, these three names reflect the three truths revealed to Abraham during that meal. Rashi personally equates Moriah with Jerusalem, quoting Chronicles II 3,1 as his source. Bereshit Rabbah 55,7 describes the name as indicating the site whence הוראה, (moral) instruction to Israel originates. This is also the site from which reverence for. G–d emanates. Onkelos sees in the name a reference to the incense-offering which contains מור, דרור and other spices.