Musar su Genesi 41:56

ויחן את פני העיר . Two scholars, Rav and Shemuel, opine in Shabbat 33a, that Jacob introduced coinage in the district. The other scholar, Shmuel, holds that Jacob introduced the concept of "markets," (concentrated shopping opportunities). Rabbi Yochanan said that Jacob established public baths. The difference in the opinions expressed stems from the meaning of the word Vayichan. One sage related that word to the root Cheyn, grace, something aesthetically appealing. As a result, he believed that public baths are what Jacob instituted. The other Rabbi concentrated on the expression Peney. The Midrash Hagadol on Genesis 41,56 in which the Torah describes the famine as: והרעב היה על פני כל הארץ, "The famine was on the face of the whole land," comments that the extra word פני teaches that the famine began with the rich who are called פנים. This is the reason that Rav interpreted that Jacob introduced coinage as a sign of his appreciation of being able to settle in the land. Shmuel, who explained that Jacob introduced a new marketing technique by arranging fairs, took his cue from the word העיר. What we learn from the above is that if someone claims to be a G–d-fearing individual, he needs to demonstrate this in three different areas of life, just as Jacob did.

Rabbi Menachem Habavli has this to say on the subject: "You shall always place on the Table the showbreads before Me." The reason for this commandment is that even though bread is the food of the living creatures, it is not the actual bread which provides the nutrients but the blessing with which G–d has endowed it. Keep in mind that the priest who received as litle as the size of a bean as his share of this bread [on the Sabbath when all the בתי אבות shared in it equally. Ed.] emerged well satisfied after eating from it. His face glowed in satisfaction even when the rest of the world suffered from famine. This shows that the element which provided the nourishment was that this bread was לפני תמיד, "constantly in My presence."