hence, the two were sometimes at least momentarily alone together. Applying an ancient rule that when a husband and wife are known to be alone together behind a closed door, the law presumes sexual intercourse may well have taken place, Rabbi Yosef concluded that it was possible that the former husband was the daughter's father, and hence, Jewish law, which very strongly construes all evidence in favour of birth within marriage, had to presume that he was. Thus, Rabbi Yosef concluded that there was insufficient evidence of either a former marriage or that the new husband was the father, and hence, he concluded that no evidence of mamzerut had occurred. Conservative rabbi Daniel S. Nevins, commenting on this case, noted that the box of traditional tools Rabbi Yosef used to discredit evidence of mamzer status may be sufficiently robust as to cover virtually all cases of inquiry in the types of situations a congregation rabbi would be likely to experience. Nonetheless, Orthodox authorities hold that while contemporary rabbis have authority to refine procedural rules such as rules of evidence, they do not have the authority to abolish biblically mandated categories or procedures entirely. Israeli law tries to prevent the conferring of mamzer status by refusing to allow men other than the husband or recent ex-husband from registering as a child's father without a court order. However, paternity tests have the potential to reveal mamzer status by removing the protection of the presumption of paternity on the part of a married woman's actual husband. Conservative Judaism The Committee on Jewish Law and Standards (CJLS) of the Rabbinical Assembly of Conservative Judaism has declared that Conservative Rabbis should not inquire into or accept evidence of mamzer status under any circumstances, rendering the category inoperative. In doing so, the CJLS distinguished the Conservative approach to Jewish law from the Orthodox approach, noting that Conservative Judaism regards Biblical law as only the beginning of a relationship rather than a final word, and that the Conservative movement regards it as its role and responsibility to revise Biblical law from time to time when such law conflicts with evolving concepts of morality. Karaite Judaism In Zechariah 9:6, "mamzer" is referenced similar to that of the nations of Ammon, Moab, Edom, Egypt, Tyre, Zidon, Ashkelon, Gaza, Philistia, etc. From such, Karaites have come to consider the most logical understanding of the Hebrew to actually refer to a