the first day of unleavened bread. This was the 14th of Nisan; the first day of the Feast, the 15th of Nisan, was the "high day": the great sabhnth, See App-156. Moreover, "the preparation "had not yet been made. See note on Mat_26:17.
killed = were wont to kill.
the Passover. Pascha., Aramaic. App-94. Put by Figure of speech metonymy (of Adjunct), App-6, for the lamb. It was this that was killed and eaten.