What are the implications of "Vehayah ha'Bechor"?
Why does the Torah add the words "asher Teiled"?
What are the implicatons of the phrase "Yakum al-Shem Achiv"?
Rashi, Ramban #2 (citing the Sifri) and Targum Yonasan: It implies that whoever performs Yibum inherits his deceased brother's property 1 (even if he does so based on the testimony of the Yevamah - Yevamos, 117b). 2
Ramban #2: It is a promise - that they will have a child (who will replace the Neshamah of the deceased brother). 3
Yevamos, 24a: It implies that the one who performs Yibum inherits the property of the deceased brother - even if he is not the Bechor. 4
Why can we not explain the Pasuk literally - that the first baby is named after the deceased brother?
Yevamos, 24a: Because a Gezeirah Shavah "al Shem" "al Shem" from "Acheihem Yikar'u be'Nachalasam" in Bereishis, 48:6 (regarding Efrayim and Menasheh) teaches us that the Pasuk is discussing (not naming the son of the Yavam, but) the Yavam inheriting his brother. 1
Oznayim la'Torah: Because then the Torah ought to have written 'Yakum al-Shem Achi Aviv ha'Meis'.
Why does the Torah add the (otherwise superfluous) word " al-Shem Achiv ha'Meis"?
Yevamos, 24a: To teach us that even if after Shimon performs Yibum with the wife of his brother Reuven, he dies, Levi is permitted to perform Yibum with her. 1
What are the implications of "ve'Lo Yimacheh Shemo mi'Yisrael"?
Rashi and Ramban (citing the Sifri): It implies that if the name of the deceased is already blotted out - he is a Saris who cannot have children - then his brother is exempt from Yibum. 1
Seforno: It implies that the baby that is subsequently born to the Yavam and the Yevamah are a perpetuation of the deceased brother's name - inasmuch as the Yibum is based on his initial Kidushin with the Yevamah. 2
Yerushalmi Yevamos, 4:1: It implies that if Reuven dies, leaving his wife pregnant, she is not subject to Yibum - since Reuven's name is not blotted out. However, she is not permitted to get married to someone else, until it is known that the baby will live. 3
Oznayim la'Torah It implies that as a result of Yibum, the Neshamah of the deceared brother will not be erased from the communal Neshamah of Am Yisrael. 4