Musar su Deuteronomio 31:12

Rabbi Chiyah taught in Vayikra Rabbah 24,5 that this portion was read out during the הקהל ceremony because so many basic elements of the Torah are contained therein. Yalkut Shimoni at the beginning of פרשת ויקהל states that the teachers of aggadic material concurred that there is no other portion of the Torah which starts with a report of the Jewish people all being assembled. G–d asked Moses to arrange for many mass meetings at which the laws of Sabbath observance would be taught. Subsequent generations were meant to learn from Moses how to teach Torah in public gatherings with the objective to glorify the name of G–d among the people. This is why Rabbi Chiyah was convinced that the portion of קדושים was read on the occasion of הקהל [a public gathering of the entire nation including women and children as per Deut. 31,12 at which the people were to hear and learn to fear the Lord. Ed.] Rabbi Chiyah further supports this by the opening verse in our פרשה.

Pharaoh said to Moses that he did not comprehend the meaning of the term עבודה, "service." He did not know if Moses referred only to the offering of a sacrifice, and if that was the meaning of עבודה, or if Moses referred to some other activity which represented the carrying out of a Heavenly command but not including sacrifices. If the meaning of עבודה was the performance of other activties it made sense that both adults and children would be required. This would be similar to the Torah requiring the presence of adults and children in Deut. 31,12 for the public reading of the Torah once in seven years during the מצות הקהל, the general assembly at the end of Tabernacles. On such an occasion however, there would be no need for the presence of their livestock. If, on the other hand, the meaning of עבודה was the sacrificial service of slaughtering animals, surely only the presence of men of all age groups was mandatory. What need was there for the presence of women and small children, i.e. טף? This is why Pharaoh repeated the word מי; he referred to the two alternatives.