Hebrews 9:13

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

2 Corinthians 5:21

Him who knew no sin, in our behalf he has made to be sin; so that in him we might become the righteousness of God.

2 Corinthians 7:1

As these promises are ours, beloved, let us cleanse ourselves from every defilement of body and of spirit, and perfect our holiness in the fear of God.

Hebrews 7:26

For we needed just such a high priest, holy, innocent, undefiled, separated from sinners, and 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
Him who knew no sin, in our behalf he has made to be sin; so that in him we might become the righteousness of God.
Hebrews 7:26
For we needed just such a high priest, holy, innocent, undefiled, separated from sinners, and exalted above the heavens;
Hebrews 9:13
For if the blood of bulls and goats and the ashes of a heifer sprinkled on those who have been defiled, sanctify to the cleansing of the flesh,

A water of separation

2 Corinthians 7:1
As these promises are ours, beloved, let us cleanse ourselves from every defilement of body and of spirit, and perfect our holiness in the fear of God.