Parashat Bo 5784

Moses said, “Thus says the LORD: Toward midnight I will go forth among the Egyptians,

כחצות הלילה means, WHEN THE NIGHT IS DIVIDED (i. e., when midnight arrives). כחצות is an infinitive with prefix, of similar form to, (1 Kings 18:36) בעלות, “when went up” and (Psalms 124:3) “when their wrath was kindled (בחרות)”. This is its literal meaning which fits in with the sense, for חצות is not a noun, being another form of חֵצִי (when the meaning would be about midnight I will go out etc.”, for this does not fit in with the sense, since God would certainly have stated exactly when He would do this). But our Rabbis took it in this sense and explained it as meaning “about the middle of the night”, and they asserted that Moses said כחצות “about midnight”, which implies near to it — either just before it or just after it, and he did not say בחצות “at midnight” (as God had bidden him say) because he feared lest Pharaoh’s astrologers might make a mistake as regards the time when the slaughter of the firstborn actually took place, thinking that it was a little earlier or later than midnight, and would say, in consequence of this error, “Moses is a liar!” (cf. Berakhot 4a).

The LORD said to Moses and Aaron in the land of Egypt: This month shall mark for you the beginning of the months; it shall be the first of the months of the year for you.