It is my understanding that when a person converts to Judaism, certain halachic relationships are severed.

So I have a couple questions about this.

  • Which relationships are severed?
  • Is a convert related to their Jewish (from birth) father?
  • If a person and their close relative convert together, are they still related? If so, what does "converting together" mean?
  • I suggest watching the videos found in this blog. moriyasplace.blogspot.com/2011/04/… really interesting take on conversion and relationships, and how it feels to the dedicated convert.
    – avi
    Dec 28, 2011 at 19:50

2 Answers 2


1 All relationships are severed when a person converts.

2 The convert was never related to their Jewish (from birth) father and does not become so when they convert.

3 No, they are not related. The phrase "converting together" is generally used when a husband and wife convert together. When they convert their non-Jewish marriage is dissolved and they marry again as Jews.

Note that even though they are not related, nevertheless D'Rabbanan laws of incest to their former non-Jewish relatives still apply.

  • 4
    I should also note that the laws between parents and children who convert can be complex. Even though Yichus is severed, a convert who has had children before converting may still be considered to have fulfilled the Mitzva of Pru U'Revu, and a child still may have obligations to their pre-conversion parents even if the parents don't convert.
    – follick
    Dec 28, 2011 at 2:16
  • 3
    Of course, in practice, conversion is a very complex area of Halachah and one needs to consult not just their local Rabbi, but an expert in these laws.
    – follick
    Dec 28, 2011 at 2:18
  • 9
    Sources for any or all of the above would be nice.
    – Seth J
    Dec 28, 2011 at 2:22
  • 2
    Could be this is derived from Yevamos 48b: A ger who is nisgayer is like a newborn child (ke-katan she-nolad dami)
    – yitznewton
    Dec 28, 2011 at 14:36
  • 2
    @MarthaF., by "related," here, people mean in the technical-Halachic sense, with implications for various purposes, some of which are discussed in come comments above. For at least some of these purposes, a non-Jew and a Jew cannot be "related," so the Jewish father and his non-Jewish child, for those purposes, aren't.
    – Isaac Moses
    Dec 28, 2011 at 19:46

Converting relatives are complete strangers but for the fact that they are not allowed to have any sexual relationship that they couldn't have had before conversion. If a brother and sister convert, they cannot marry as Jews.

  • 2
    This is not true. Many rules of incest do apply by rabbinic law after conversion, but not all of them.
    – Double AA
    Jul 29, 2012 at 22:11
  • 4
    This answer needs some sources.
    – Seth J
    Jul 29, 2012 at 22:32

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