The passover, i.e. either,
1. Properly and strictly so called, which was the paschal lamb, and so the sheep and oxen, which here follow, are mentioned only as additional sacrifices, which were to be offered in the seven days of the paschal solemnity, Numbers 28:18,19, &c. Or,
2. Largely, to wit, for the passover-offerings, to wit, which were offered after the lamb in the seven days, and so this very word is used 2 Chronicles 35:8,9. And this signification seems necessary here, partly because it is here said to consist of the flock and of the herd, or of sheep and oxen, and partly because it follows, Deuteronomy 16:3, Thou shalt eat no leavened bread with it, seven days shalt thou eat unleavened bread therewith, i.e. with the passover, which could not be done with the passover strictly so called, which was to be wholly spent in one day. Or,
3. The feast of the passover, and so the place may be rendered, Thou shalt therefore observe or keep the feast of the passover (as those same Hebrew words are taken, Numbers 9:5 Joshua 5:10 2 Chronicles 35:1,17,18,19) unto the Lord thy God, with sheep and with oxen, as is prescribed, Numbers 28:18, &c.