לא יבוא עמוני ומואבי בקהל ד'...על דבר אשר לא קדמו אתכם בלחם ובמים... לא תתעב מצרי כי גר היית בארצו
Gratitude plays an important role in Judaism. The Torah does not countenance ingratitude. It is considered an indication of selfishness and mean-spiritedness – character deficiencies which do not integrate well into the Jewish nation. Thus, members of the nations of Ammon and Moav, both descendants of Lot, whose lives were spared as a result of our Patriarch’s actions, are not accepted by members of the Jewish nation for marriage. They may convert, but their genes are unacceptable, due to their character flaw of ingratitude. The Egyptian, however, upon conversion, is accepted. Although we suffered greatly at the hands of the…