וְיִפְתָּ֣ח הַגִּלְעָדִ֗י הָיָה֙ גִּבּ֣וֹר חַ֔יִל וְה֖וּא בֶּן־אִשָּׁ֣ה זוֹנָ֑ה וַיּ֥וֹלֶד גִּלְעָ֖ד אֶת־יִפְתָּֽח׃
און יפֿתּח דער גלעדער איז געװען אַ העלדישער גיבור, און ער איז געװען דער זון פֿון אַ פֿרױ אַ זונה; און גלעד האָט געבאָרן יפֿתּחן.
Rabbeinu Bahya
וכל בת יורשת נחלה ממטות בני ישראל, “and any daughter inheriting ancestral land, etc.” A girl whose father did not have a son who could inherit the land. This is why the Torah had to write a second time (verse 9) “so that the inheritance shall not make the rounds, etc.” (Ibn Ezra).
As a result of this verse it became a custom in Israel that if a girl who had inherited ancestral land married out of her tribe to describe her as a זונה, “a harlot.” She would therefore be deprived of the inheritance from her father.
This is the meaning of the words in Judges 11,1 that Yiftach the Gileadi was the son of a woman known as זונה, harlot [i.e. it is not a reference to her sexual mores. Ed.] The prophet is merely telling us that his mother had belonged to a different tribe than his father. Yonathan ben Uzziel also translates the word זונה in Judges 11,1 in the same way [cited by R' David Kimchi ibid., but is not found in our editions of Targum Yonathan].
Perhaps the meaning of the word לא תסב נחלה refers to persons, not landed property, and this would account for the Torah writing the same words twice. [It would be an oblique reference to the transmigration of the souls. If injustice would occur through the incorrect handling of ancestral property, certain souls thus deprived might have to be placed inside other bodies to right the wrong during another cycle of life on earth. Ed.]
This may also account for the use of the word ידבקו, “they shall cleave” (verse 9), seeing that this is a term applicable to both souls and bodies but not to land. The first time (verse 7) the Torah writes the word it refers to the body, the second time to the soul.
As a result of this verse it became a custom in Israel that if a girl who had inherited ancestral land married out of her tribe to describe her as a זונה, “a harlot.” She would therefore be deprived of the inheritance from her father.
This is the meaning of the words in Judges 11,1 that Yiftach the Gileadi was the son of a woman known as זונה, harlot [i.e. it is not a reference to her sexual mores. Ed.] The prophet is merely telling us that his mother had belonged to a different tribe than his father. Yonathan ben Uzziel also translates the word זונה in Judges 11,1 in the same way [cited by R' David Kimchi ibid., but is not found in our editions of Targum Yonathan].
Perhaps the meaning of the word לא תסב נחלה refers to persons, not landed property, and this would account for the Torah writing the same words twice. [It would be an oblique reference to the transmigration of the souls. If injustice would occur through the incorrect handling of ancestral property, certain souls thus deprived might have to be placed inside other bodies to right the wrong during another cycle of life on earth. Ed.]
This may also account for the use of the word ידבקו, “they shall cleave” (verse 9), seeing that this is a term applicable to both souls and bodies but not to land. The first time (verse 7) the Torah writes the word it refers to the body, the second time to the soul.
Chizkuni
ויולד בן, “he begat a son;” the Torah did not write: “he sired Noach,” as it did in similar situations, i.e. Genesis 5,6; 5,9; Judges 11,1; Chronicles I 1,34, et al. The reason is that Noach warranted an extra verse seeing that the whole human race today exists thanks to him. The entire human race was destroyed during his lifetime; only he, his wife and his children and their wives, having been saved. A different interpretation: Metushelach, Lemech’s father, advised his son not to immediately name him as his contemporaries who were worshipping all kinds of idols, and who would curse and kill people who were monotheists, would try and kill him by telling their idols his name. After Noach had married and had sired a son, his father turned to his father again and was told then to call him Noach, as he had the potential to save all of mankind if they would follow his lifestyle. If not, they would all perish before they could harm him. (Compare Torah sh’leymah item 71 on this verse)