Musar su Genesi 45:28

There is an additional important allusion in this verse which is seized upon by the Zohar in a different context. Accordingly, the performance of a מצוה enhances the "image" of G–d, whereas when one sins one damages G–d's "image" both in the Celestial Regions and on earth. Man's sins leave noticeable imprints on his face; this is the reason that Isaiah 3,9 speaks of: הכרת פנים ענתה בם, "Their faces reflect their sins. Rabbi Moshe Alshich, commenting on Genesis 45,28: אלכה ואראנו בטרם אמות, "I will go and see him (Joseph) before I die," writes that Jacob wanted to determine if Joseph had remained loyal to the Abrahamitic tradition by looking at his face. As soon as Jacob looked at Joseph's face (Genesis 46,29) he expressed willingness to die. The Torah phrases this peculiarly when it writes: "After I have seen that you are alive." At first glance the words "that you are alive" seem superfluous. Jacob indicated by his words that being "alive" in itself was quite meaningless unless Joseph had remained loyal to his father's teachings. Joseph's face reflected G–d's approval, i.e. G–d made Joseph's face light up. One of the ways which result in man's face being illuminated is by means of repentance. When the Jewish people are reminded (Deut. 5,4) that G–d spoke to them פנים אל פנים, "face to face," this is a compliment telling us that their facial features had undergone a change for the better, and that the ugly lines on their faces reflecting their sinful behavior had been erased. Psalms 42,12 speaks of the hope of the sons of Korach. There is no point in being downcast when repentance can cause us to reflect G–d's salvation on our own face; not only this, but we will simultaneously remove the tarnish caused to G–d's "image" by our own sins. The commandment to appear in the Temple three times a year (16,16), caused our sages in Chagigah 2a to say that the word יראה can be read both passively or actively, i.e. "to be seen" or "to see." Their message is that if one comes to the Temple with a positive attitude, i.e. in order to "see" G–d, then one will also be positively "seen" by G–d. This also enables us to understand another verse which is generally held to be almost beyond comprehension.