Exodus 12:17

12:17 So you will keep the Feast of Unleavened Bread, because on this very ¹  day I brought your regiments ²  out from the land of Egypt, and so you must keep this day perpetually as a lasting ordinance. ³ 

Exodus 12:51

12:51 And on this very day the Lord brought the Israelites out of the land of Egypt by their regiments.

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¹ tn Heb “on the bone of this day.” The expression means “the substance of the day,” the day itself, the very day (S. R. Driver, Exodus, 95).

² tn The word is “armies” or “divisions” (see Exod 6:26 and the note there; cf. also 7:4). The narrative will continue to portray Israel as a mighty army, marching forth in its divisions.

³ tn See Exod 12:14.