New International Version
They must purify themselves with the water on the third day and on the seventh day; then they will be clean. But if they do not purify themselves on the third and seventh days, they will not be clean.

New Living Translation
They must purify themselves on the third and seventh days with the water of purification; then they will be purified. But if they do not do this on the third and seventh days, they will continue to be unclean even after the seventh day.

English Standard Version
He shall cleanse himself with the water on the third day and on the seventh day, and so be clean. But if he does not cleanse himself on the third day and on the seventh day, he will not become clean.

Berean Study Bible
He must purify himself with the water on the third day and on the seventh day; then he will be clean. But if he does not purify himself on the third and seventh days, he will not be clean.

New American Standard Bible
That one shall purify himself 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.

NASB 1995
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.

NASB 1977
‘That one shall purify himself from uncleanness with the water on the third day and on the seventh day, and then he shall be clean; but if he does not purify himself on the third day and on the seventh day, he shall not be clean.

Amplified Bible
That one shall purify himself from uncleanness with the water [made with the ashes of the burned heifer] 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.

Christian Standard Bible
He is to purify himself with the water on the third day and the seventh day; then he will be clean. But if he does not purify himself on the third and seventh days, he will not be clean.

Holman Christian Standard Bible
He is to purify himself with the water on the third day and the seventh day; then he will be clean. But if he does not purify himself on the third and seventh days, he will not be clean.

Contemporary English Version
But if you wash with the water mixed with the cow's ashes on the third day and again on the seventh day, you will be clean and acceptable for worship. You must wash yourself on those days; if you don't, you will remain unclean.

Good News Translation
They must purify themselves with the water for purification on the third day and on the seventh day, and then they will be clean. But if they do not purify themselves on both the third and the seventh day, they will not be clean.

GOD'S WORD® Translation
The unclean person must use this water on the third day and the seventh day to take away his sin. Then he will be clean. But if he doesn't use this water on the third day and the seventh day, he will not be clean.

International Standard Version
He is to purify himself on the third day and he will be clean on the seventh day. But if he can't purify himself on the third day then he can't be clean on the seventh day.

NET Bible
He must purify himself with water on the third day and on the seventh day, and so will be clean. But if he does not purify himself on the third day and the seventh day, then he will not be clean.