Numbers 3:13

3:13 because all the firstborn are mine. When I destroyed all the firstborn in the land of Egypt, I set apart for myself all the firstborn in Israel, both man and beast. They belong to me. I am the Lord.”

Numbers 3:41

3:41 And take the Levites for me – I am the Lord – instead of all the firstborn males among the Israelites, and the livestock of the Levites instead of all the firstborn of the livestock of the Israelites.”

Numbers 8:17

8:17 For all the firstborn males among the Israelites are mine, both humans and animals; when I destroyed all the firstborn in the land of Egypt I set them apart for myself.

Numbers 18:15

18:15 The firstborn of every womb which they present to the Lord, whether human or animal, will be yours. Nevertheless, the firstborn sons you must redeem, and the firstborn males of unclean animals you must redeem.

Numbers 21:10

The Approach to Moab

21:10 The Israelites traveled on and camped in Oboth.

Numbers 26:60

26:60 And to Aaron were born Nadab and Abihu, Eleazar and Ithamar.

tn The form הַכֹּתִי (hakkoti) is the Hiphil infinitive construct of the verb נָכָה (nakhah, “to strike, smite, attack”). Here, after the idiomatic “in the day of,” the form functions in an adverbial clause of time – “when I destroyed.”

sn In the Exodus event of the Passover night the principle of substitution was presented. The firstborn child was redeemed by the blood of the Lamb and so belonged to God, but then God chose the Levites to serve in the place of the firstborn. The ritual of consecrating the firstborn son to the Lord was nevertheless carried out, even with Jesus, the firstborn son of Mary (Luke 2:22-23).

tn The verb is the perfect tense with vav (ו) consecutive; it carries forward the instructions from the preceding verse. The verb “take” now has the sense of appointing or designating the Levites.

tn The idiomatic “on the day of” precedes the infinitive construct of נָכָה (nakhah) to form the temporal clause: “in the day of my striking…” becomes “when I struck.”

tn The construction uses the infinitive absolute and the imperfect tense of the verb “to redeem” in order to stress the point – they were to be redeemed. N. H. Snaith suggests that the verb means to get by payment what was not originally yours, whereas the other root גָאַל (gaal) means to get back what was originally yours (Leviticus and Numbers [NCB], 268).

sn See further D. L. Christensen, “Numbers 21:14-15 and the Book of the Wars of Yahweh,” CBQ 36 (1974): 359-60; G. W. Coats, “The Wilderness Itinerary,” CBQ 34 (1972): 135-52; G. I. Davies, “The Wilderness Itinerary,” TB 25 (1974): 46-81; idem, The Way of the Wilderness; G. E. Mendenhall, “The Hebrew Conquest of Palestine,” BA 25 (1962): 66-87.