Hebrews 9:13

For if the blood of bulls, and of goats, and the ashes of an heifer sprinkling the defiled sanctifieth to corporal purification,

2 Corinthians 5:21

For he hath made him, who knew no sin, to be a sin offering for us, that we might become the righteousness of God in him.

2 Corinthians 7:1

HAVING therefore these promises, beloved, let us cleanse ourselves from all defilement of flesh and spirit, perfecting holiness in the fear of God.

Hebrews 7:26

For such an high-priest was suitable to us, holy, inoffensive, spotless, separate from sinners, and made higher than 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 he hath made him, who knew no sin, to be a sin offering for us, that we might become the righteousness of God in him.
Hebrews 7:26
For such an high-priest was suitable to us, holy, inoffensive, spotless, separate from sinners, and made higher than the heavens:
Hebrews 9:13
For if the blood of bulls, and of goats, and the ashes of an heifer sprinkling the defiled sanctifieth to corporal purification,

A water of separation

2 Corinthians 7:1
HAVING therefore these promises, beloved, let us cleanse ourselves from all defilement of flesh and spirit, perfecting holiness in the fear of God.