Numbers 19:12

That one shall purify himself from uncleanness with the water on the third day and on the seventh day, and then he will be clean; but if he does not purify himself on the third day and on the seventh day, he will not be clean.

Numbers 31:19

And you, camp outside the camp seven days; whoever has killed any person and whoever has touched any slain, purify yourselves, you and your captives, on the third day and on the seventh day.

Exodus 19:11

and let them be ready for the third day, for on the third day the Lord will come down on Mount Sinai in the sight of all the people.

Exodus 19:15

He said to the people, “Be ready for the third day; do not go near a woman.”

Leviticus 7:17

but what is left over from the flesh of the sacrifice on the third day shall be burned with fire.

Numbers 19:17-19

Then for the unclean person they shall take some of the ashes of the burnt purification from sin and flowing water shall be added to them in a vessel.

Psalm 51:7

Purify me with hyssop, and I shall be clean;
Wash me, and I shall be whiter than snow.

Ezekiel 36:25

Then I will sprinkle clean water on you, and you will be clean; I will cleanse you from all your filthiness and from all your idols.

Hosea 6:2

“He will revive us after two days;
He will raise us up on the third day,
That we may live before Him.

Acts 15:9

and He made no distinction between us and them, cleansing their hearts by faith.

1 Corinthians 15:3-4

For I delivered to you as of first importance what I also received, that Christ died for our sins according to the Scriptures,

Revelation 7:14

I said to him, “My lord, you know.” And he said to me, “These are the ones who come out of the great tribulation, and they have washed their robes and made them white in the blood of the Lamb.

Treasury of Scripture Knowledge

Summary

He shall purify himself with it on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.

General references

Bible References

He shall purify

Numbers 19:17
Then for the unclean person they shall take some of the ashes of the burnt purification from sin and flowing water shall be added to them in a vessel.
Psalm 51:7
Purify me with hyssop, and I shall be clean;
Wash me, and I shall be whiter than snow.
Ezekiel 36:25
Then I will sprinkle clean water on you, and you will be clean; I will cleanse you from all your filthiness and from all your idols.
Acts 15:9
and He made no distinction between us and them, cleansing their hearts by faith.
Revelation 7:14
I said to him, “My lord, you know.” And he said to me, “These are the ones who come out of the great tribulation, and they have washed their robes and made them white in the blood of the Lamb.

Third day

Numbers 31:19
And you, camp outside the camp seven days; whoever has killed any person and whoever has touched any slain, purify yourselves, you and your captives, on the third day and on the seventh day.
Exodus 19:11
and let them be ready for the third day, for on the third day the Lord will come down on Mount Sinai in the sight of all the people.
Leviticus 7:17
but what is left over from the flesh of the sacrifice on the third day shall be burned with fire.
Hosea 6:2
“He will revive us after two days;
He will raise us up on the third day,
That we may live before Him.
1 Corinthians 15:3
For I delivered to you as of first importance what I also received, that Christ died for our sins according to the Scriptures,

General references

Leviticus 7:19
‘Also the flesh that touches anything unclean shall not be eaten; it shall be burned with fire. As for other flesh, anyone who is clean may eat such flesh.
Ezekiel 44:26
After he is cleansed, seven days shall elapse for him.