Why did Yosef insert the word "Leimor"?
Ramban and Targum Yonasan: He made them swear that they would make their children swear 1 ...
When Yosef saw that his brothers were all old (he was the first of them to die), he commanded all their sons and all his father's family that they would also command their grandchildren, that when the redemption arrived, they would take him out of Egypt (Ramban at the end of 49:31).
Why did he use the double expression "Pakod Yifkod"?
Targum Yonasan: 50:25:3:1.
Ba'al ha'Turim #1: Just as Yosef ruled for 'Pey" (eighty) years, so too, will an eighty-year old redeemer come to take you out of Egypt.
Ba'al ha'Turim #2: Translating "Pakod" to mean 'he will deduct 1 , he was telling his brothers that Hashem would deduct a hundred and ninety years 2 from the initial four hundred years that Hashem specified at the B'ris bein ha'Besarim.
Ba'al ha'Turim #3: "Pakod", on the merit of the Avos, "Yifkod", on the merit of the Imahos.
Why did Yosef place "Pakod Yifkod ... " before "ve'Ha'alisem ... "?
Targum Yonasan: He was referring to an independent promise - to inform their children that the slavery was about to begin, and to swear that they would not leave Egypt until two redeemers 1 would come and say to them "Pakod Yifkod". 2
Why did Yosef not ask to be buried in Me'aras ha'Machpeilah, like his father did?
Why did he not instruct them to transport his body to Kena'an immediately, like his father did?
Ramban #1 (49:31): Because he knew that Pharaoh would never grant them permission to do so. 1
Ramban #2: Moreover, assuming that his brothers and family would accompany his coffin, 2 the Egyptians would rob them of everything they owned in their absence.
The verse connotes that all Yosef's brothers were alive when he died. Why did he die before them?
Rabanan, in Bereishis Rabah (100:3): He heard close to five times "your servant, our father", and he was silent. 3
Rebbi, in Bereishis Rabah (100:3): It is because he embalmed his father.
Brachos 55a: It is because he conducted with authority; this shortens a person's life.
Divrei Eliyahu: The Torah says so only five times! "The translator was in between them" (42:23) - Yosef heard them say it five times in Leshon ha'Kodesh, and five times translated into Mitzri.
Maharzo (on the Midrash): It is close to five times, for "l'Avdecha l'Avinu" (43:28) is not so explicit. He lost five years for causing Yehudah to say so, and five for silence. All the Avos and Shevatim should have lived [at least] 120 year - "v'Hayu Yamav Me'ah v'Esrim Shanah" (6:3). Due to this, Yosef lived only 110.
Why did Yosef command his brothers to take his bones, and not his own sons?
Moshav Zekenim, based on Sotah 13b: Since they stole him from Shechem, they should return him to Shechem. (Refer to 37:17:2:2* - PF.)
Why did Yosef merit to buried (eventually) in Eretz Yisrael, and Moshe did not?
Moshav Zekenim: Yosef did not conceal his origin - "I was stolen from Eretz ha'Ivrim" (40:15). Moshe spoke Mitzri to Benos Yisro, so they called him Ish Mitzri (Shmos 2:19).
Why did Yosef say "Pakod Yifkod" in the previous verse, and again in this verse?
Da'as Zekenim: Yakov said "Pakod Yifkod"; therefore, when Elokim Pakod Yifkod...
למה את יעקב הוציאו ממצרים אחרי מותו ואילו את השבטים נשארו עד שיצאו ישראל משם?
מהר"ל (גבורות ה' פ"ט עמ' נד ד"ה ומפני): ישראל היו ראויים להשתעבד רק כאשר הם היו 70 נפש, והשבטים יותר קרובים אל ה-70 נפש מיעקב.