Discovery BoxExodus 12:21 
Context12:21 Then Moses summoned all the elders of Israel, and told them, “Go and select 1 for yourselves a lamb or young goat 2 for your families, and kill the Passover animals. 3
Exodus 13:13
Context13:13 Every firstling 4 of a donkey you must redeem 5 with a lamb, and if you do not redeem it, then you must break its neck. 6 Every firstborn of 7 your sons you must redeem.
Exodus 29:40-41
Context29:40 With the first lamb offer a tenth of an ephah 8 of fine flour mixed with a fourth of a hin 9 of oil from pressed olives, and a fourth of a hin of wine as a drink offering. 29:41 The second lamb you are to offer around sundown; you are to prepare for it the same meal offering as for the morning and the same drink offering, for a soothing aroma, an offering made by fire to the Lord.
1 tn Heb “draw out and take.” The verb has in view the need “to draw out” a lamb or goat selected from among the rest of the flock.
2 tn The Hebrew noun is singular and can refer to either a lamb or a goat. Since English has no common word for both, the phrase “a lamb or young goat” is used in the translation.
3 tn The word “animals” is added to avoid giving the impression in English that the Passover festival itself is the object of “kill.”
4 tn Heb “and every opener [of a womb].”
5 tn The verb תִּפְדֶּה (tifdeh), the instructional imperfect, refers to the idea of redemption by paying a cost. This word is used regularly of redeeming a person, or an animal, from death or servitude (S. R. Driver, Exodus, 109).
6 tn The conditional clause uses an imperfect tense; this is followed by a perfect tense with the vav consecutive providing the obligation or instruction. The owner might not redeem the donkey, but if he did not, he could not keep it, he had to kill it by breaking its neck (so either a lamb for it, or the donkey itself). The donkey could not be killed by shedding blood because that would make it a sacrifice, and that was not possible with this kind of animal. See G. Brin, “The Firstling of Unclean Animals,” JQR 68 (1977): 1-15.
7 tn Heb “and every firstborn of man among your sons.” The addition of “man” is clearly meant to distinguish firstborn humans from animals.
sn One was to sacrifice the firstborn animals to Yahweh, but the children were to be redeemed by their fathers. The redemption price was five shekels (Num 18:15-16).
8 tn The phrase “of an ephah” has been supplied for clarity (cf. Num 28:5). The ephah was a commonly used dry measure whose capacity is now uncertain: “Quotations given for the ephah vary from ca. 45 to 20 liters” (C. Houtman, Exodus, 2:340-41).
9 tn “Hin” is a transliterated Hebrew word that seems to have an Egyptian derivation. The amount of liquid measured by a hin is uncertain: “Its presumed capacity varies from about 3,5 liters to 7,5 liters” (C. Houtman, Exodus, 3:550).
