Negative Mitzvah 52
The prohibition of intermarriage
Deuteronomy 7:3 "Neither shall you make marriages with them"
We are forbidden to marry non-Jews.
Negative Mitzvah 53
We are forbidden to marry a man from the Ammonite or Moabite nations
Deuteronomy 23:4 "An Ammonite or a Moabite shall not enter the congregation of G-d"
We are not allowed to marry a man from the nations of Ammon or Moab even if he has converted to Judaism.
However, it is permissible to marry a woman from Ammon or Moab after she has converted to Judaism.
These nations refused to offer bread and water to the Jewish people when they passed by their borders and because of this act of cruelty, they were excluded from ever being able to join the Jewish people in marriage.
Negative Mitzvah 55
We are forbidden to reject an Egyptian if he converts to Judaism
Deuteronomy 23:8 "Do not despise an Egyptian because you were a stranger in his land"
The Torah forbids an Egyptian convert from marrying freely into the Jewish people until the third generation.
The hundreds of years of cruel slavery in Egypt affected both nations. Nevertheless, despite the hardships in Egypt, the Torah appreciates that Jacob and his sons were given refuge in Egypt. Also, it was in Egypt that the Jewish people developed into a nation to be chosen by HaShem.
Therefore, we are commanded not to totally reject an Egyptian that converts to Judaism. The third generation of such converts may marry freely among the Jewish people.
Negative Mitzvah 54
We are forbidden to reject an Edomite if he converts to Judaism
Deuteronomy 23:8 "Do not despise the Edomite, since he is your brother"
The Edomite nation descends from Esau, Jacob's brother.
Esau left his descendants a heritage of murder and theft.
Therefore, different laws apply to converts from the Edomite nation than to converts from other nations.
They may not marry freely among the Jewish people until the third generation. Nevertheless, since they descended from our forefathers and they are, in essence, our brothers, we may not totally reject them.
Therefore, the third generation of Edomite converts may marry freely among the Jews. We are prohibited from refusing to intermarry with them.
Negative Mitzvah 354
A "Mamzer" may not marry freely within the Jewish community
Deuteronomy 23:3 "A Mamzer shall not enter into the assembly of the L-rd"
A "Mamzer" is a child that is born as a result of certain forbidden relationships.
This Negative Mitzvah forbids a Mamzer from marrying freely among Jews.
Negative Mitzvah 360
Restriction on a disabled man
:blue: Deuteronomy 23:2 "He that is crushed or maimed in his private parts shall not enter the assembly of the L-rd"
A male whose manhood is so physically disabled that he cannot have children is cautioned not to marry a Jewish woman.
This prohibition only applies to those disabilities that a man brings upon himself and not those caused by illness or other afflictions that are not his fault.
Negative Mitzvah 361
It is forbidden to disable males from fathering children
Leviticus 22:24 "Neither shall you do this in your land"
We are forbidden to disable a male - man or animal - from fathering children.