"Why should we be discounted?" Estrangement and Pesach Sheni

(4) Moses instructed the Israelites to offer the passover sacrifice; (5) and they offered the passover sacrifice in the first month, on the fourteenth day of the month, at twilight, in the wilderness of Sinai. Just as the LORD had commanded Moses, so the Israelites did. (6) But there were some men who were unclean by reason of a corpse and could not offer the passover sacrifice on that day. Appearing that same day before Moses and Aaron, (7) those men said to them, “Unclean though we are by reason of a corpse, why must we be discounted from presenting the LORD’s offering at its set time with the rest of the Israelites?” (8) Moses said to them, “Stand by, and let me hear what instructions the LORD gives about you.” (9) And the LORD spoke to Moses, saying: (10) Speak to the Israelite people, saying: When any of you or of your posterity who are defiled by a corpse or are on a long journey would offer a passover sacrifice to the LORD, (11) they shall offer it in the second month, on the fourteenth day of the month, at twilight. They shall eat it with unleavened bread and bitter herbs, (12) and they shall not leave any of it over until morning. They shall not break a bone of it. They shall offer it in strict accord with the law of the passover sacrifice.

אנחנו טמאים לנפש אדם למה נגרע, since we are ritually impure because performed a mitzvah [of burying the dead], why should we forced into a sin!?

Stand by. Wait. Or be quiet, as in Tanakh, "stand by," can mean "don't respond further." Moshe said to them, don't cry out until I've heard [from God].

או בדרך רחקה [IF ANY MAN … SHALL BE UNCLEAN BY REASON OF A DEAD,] OR BE ON A DISTANT JOURNEY — There is a dot on it (on the ה of the word רחקה), in order to tell that what Scripture means by בדרך רחקה is that it (the journey) need not really be a distant one, but that his sacrifice is postponed even though he was merely outside the threshold of the forecourt during the whole time that the ceremony of slaughtering the Passover sacrifice tasted. (Pesachim 93b, cf. Sifrei Bamidbar 69:2). —

Or on a distant journey, the dot over the letter "ה" is to indicate that the word "distant" doesn't refer to the journey, but rather that the person themself is distant. Or any of your descendants means that while the distant journey aspect applies to any of you, the descendants means extends the application to the future.

What does the wicked child say? "'What is this worship to you?' (Exodus 12:26)" 'To you' and not 'to him.' And since he excluded himself from the collective, he denied a principle [of the Jewish faith]. And accordingly, you will blunt his teeth and say to him, "'For the sake of this, did the Lord do [this] for me in my going out of Egypt' (Exodus 13:8)." 'For me' and not 'for him.' If he had been there, he would not have been saved.