Hebrews 9:13

For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have been defiled sanctify for the cleansing of the flesh,

2 Corinthians 5:21

For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.

2 Corinthians 7:1

Since we have these promises, beloved, let us cleanse ourselves from every defilement of flesh and spirit, perfecting holiness in the fear of God.

Hebrews 7:26

For it was fitting that we should have such a high priest, holy, blameless, unstained, separated from sinners, exalted above the heavens.

Treasury of Scripture Knowledge

Summary

And a man that is clean shall gather up the ashes of the heifer, and lay them up without the camp in a clean place, and it shall be kept for the congregation of the children of Israel for a water of separation: it is a purification for sin.

A water of separation

Bible References

Clean

2 Corinthians 5:21
For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.
Hebrews 7:26
For it was fitting that we should have such a high priest, holy, blameless, unstained, separated from sinners, exalted above the heavens.
Hebrews 9:13
For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have been defiled sanctify for the cleansing of the flesh,

A water of separation

2 Corinthians 7:1
Since we have these promises, beloved, let us cleanse ourselves from every defilement of flesh and spirit, perfecting holiness in the fear of God.