7 And these men will say to him, We are unclean by the soul of man: wherefore shall we be withheld so as not to bring near an offering of Jehovah at his appointment, in the midst of the sons of Israel?
Numbers 9:7 Cross References - JuliaSmith
Exodus 12:27
27 And they said, This the sacrifice of the passing over to Jehovah, who passed over the houses of the sons of Israel in Egypt in his striking the Egyptians, and he delivered our houses. And the people will bow down and will worship.
Numbers 9:2
2 And the sons of Israel shall do the passover in its appointment
Deuteronomy 16:2
2 And sacrifice the passover to Jehovah thy God, of the sheep, and the oxen in the place which Jehovah shall choose to cause his name to dwell there.
2 Chronicles 30:17-19
17 For many in the convocation which consecrated not themselves: and the Levites for slaughtering the passover to all not being cleansed to consecrate to Jehovah.
18 For a multitude of the people, many from Ephraim and Manasseh, Issachar and Zebulon, were not cleansed, for they ate the Passover not as written. But Hezekiah prayed for them, saying, Jehovah the good will expiate in behalf
19 Of every one preparing his heart to seek God, Jehovah the God of his fathers, and not according to the purification of the holy place.
1 Corinthians 5:7-8
7 Therefore cleanse out the old leaven, that ye may be a new mixture, as ye are unleavened. For also our pascha was sacrificed for us, Christ:
8 Therefore let us keep the festival, not with old leaven, neither with the leaven of vice and wickedness; but with the unleavened of frankincense and truth.