קדש לי כל בכור, they all have to be redeemed just as other sanctified items which cannot be used for their designated purpose can be redeemed; otherwise they are forbidden for secular use. This prohibition is spelled out in Deuteronomy 15,19 in the words לא תעבוד בבכור שורך, “you are not allowed to perform work with your firstborn ox.” The amount designated here by the Torah for redeeming a human being is the minimum applicable mentioned in connection with this legislation in chapter 27 in Leviticus. Whereas a fully mature male over 20 is valued at 50 shekel, the 30 day old infant is valued at 5 shekel.

בחודש האביב, the reason that the Passover festival is to be observed in spring is so that it will coincide with the legislation of marking the lunar new year with the month of spring, the month of rejuvenation. Our sages have been very careful when calculating a permanent calendar to ensure that Passover never occurs before the spring equinox.

כי ביד חזקה הוציאך, by changing the rules governing the inert, eternal components of nature. This point was spelled out in Joshua 4,24 when he referred to G’d having split the waters of the Jordan to enable the people to wade across. The verse there reads: “so that all the nations of the earth will know that the hand of the Lord is very powerful.”

מה זאת?, a reference to the unusual legislation of having to redeem the firstborn impure animal donkey seeing that its body could not have been sanctified due to its inherent impurity. Similarly, the need to break this animal’s neck as an alternative to redeeming it sounds peculiar to the son who is asking.

בחוזק יד הוציאנו ה' ממצרים, due to the urgency with which the Egyptians wanted to get rid of us (12,33) we left Egypt traveling in coaches, just as the family of Yaakov had arrived in Egypt hundreds of years ago in coaches supplied by Pharaoh himself. Both the coaches materialised miraculously, as well as the many donkeys needed to transport the new found riches of the people. Seeing that the donkeys had therefore had a constructive part to play in the redemption of the Israelites, this is reflected in their not being treated like all other impure beasts. This degree of minor sanctity accorded the firstborn donkey may be redeemed in exchange for a pure animal, so that the donkey can then be used in the regular way.

ויהי כי בקשה פרעה, seeing that Pharaoh had put so many obstacles in the path of our eventual liberation he is himself compared to a donkey as we know from Ezekiel 23,20, the prophet describing the flesh of the Egyptians as similar to donkeys. Pharaoh could have easily redeemed himself by releasing the Israelites, i.e. the Israelites are compared to the שה, the lamb. As a result of failing to do so, G’d chose to kill the firstborn instead.

כל בכור בארץ מצרים, the fact that the Torah does not speak about “every Egyptian firstborn,” but about “every firstborn in Egypt,” shows that basically, the Israelites, i.e. their firstborn were also guilty of death at the hands of G’d. He saved them by sanctifying them as His personal property.

על כן אני זובח, this act of grace by G’d at the time is the reason that I annually express my gratitude by slaughtering the firstborn male of any pure animal. [after giving it to the priest. Ed.] Seeing that the firstborn donkeys or any other impure animal are unfit as offerings on the altar, I redeem them in order to be able to make secular use of these animals as beasts of burden, etc. As far as the firstborn of my own sons are concerned, seeing that they were sanctified from birth, I redeem them in order that they can lead regular lives, as the priesthood is no longer an option for such firstborn ever since the sin of the golden calf.

ויהי בשלח...ולא נחם אלוקים דרך ארץ פלשתים, even though it had been G’d’s plan to lead the Israelites to Mount Sinai to receive the Torah there, and only from there to the land of Israel, as He stated Himself in Exodus 6,7-8 :”I will take you as My people, and I will bring you to the land, etc.,” at this point, G’d’s plan was to lead them to the Sea of Reeds, which was neither the route to the land of the Philistines, nor the route that led to Mount Sinai. [we must remember that Moses had stood at Chorev=Mt Sinai at the burning bush and he did not have to cross the sea to do this. Ed.] The major reason for this was to bring about the drowning of Pharaoh and his army in the sea. [it is important to always remember that due to man’s free will, G’d cannot deal with man in the way He deals with inert objects or even animals, none of which could oppose Him. G’d needs to create a scenario which gives man a chance to delude himself, thus bringing him to act in a manner enabling G’d to insure that His design will be carried out. Ed.] An example of G’d acting in this manner is described in Judges 4,7 where G’d Himself speaks about how He “dragged” Sisera and his army and 900 armoured vehicles across the river Kishon to face Barak. The simplest route to get to the Sea of Reeds was by traversing the land of the Philistines. דרך ארץ פלשתים, G’d did not want them to travel this route

כי קרוב הוא because this route was too close to Egypt, afforded too easy a way to return to Egypt. Also, seeing it was a much traveled route, too many travelers would be able to report to Pharaoh about the Israelites and also too many Egyptians could keep the Israelites informed of what transpired in their country. If the Israelites would have to face combat

בראותם מלחמה, when they would hear that the Egyptians were mobilizing for war preparatory to chasing after the Israelites, the latter would no doubt return to Egypt out of fear of being killed. This is why G’d decided to lead them on a route not frequented by travelers at all.

דרך המדבר ים סוף, that they should march to the Sea of Reeds via the desert. On that route they would neither encounter travelers headed in the direction of Egypt, nor would they encounter travelers who had come from Egypt who could report that Pharaoh was going to chase them, until Pharaoh would actually catch up with them by which time a “voluntary” return to Egypt and slavery would not be of any advantage to them anymore, as their surrender would not then be acceptable to Pharaoh.

וחמושים עלו, although they had left Egypt fully armed. They did not have the courage to face the Egyptians in combat in spite of their being armed. They felt too inexperienced to face trained warriors.

ויקח משה את עצמות יוסף עמו, seeing that he was now the leader of the nation it was up to him to make good on the oath Joseph

השבע השביע את בני ישראל, any obligation undertaken communally must be honoured by the leader of that community when the time and opportunity presents itself to discharge that obligation.

וה' הולך לפניהם, from the time the Israelites had reached Sukkot, at the border of Egypt, just beyond, G’d’s presence had manifested itself the moment they entered the desert.