shall be sprinkled from this water on the third and seventh days, and so shall he be cleansed. But if he was not sprinkled on the third day, he is not able to be cleansed on the seventh
Other versions
King James Version
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.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.New International Version
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.