GOD'S WORD® Translation
Jesus told them, "I can guarantee this truth: If you don't eat the flesh of the Son of Man and drink his blood, you don't have the source of life in you.

American Standard Version
Jesus therefore said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man and drink his blood, ye have not life in yourselves.

Berean Study Bible
So Jesus said to them, “Truly, truly, I tell you, unless you eat the flesh and drink the blood of the Son of Man, you have no life in you.

Douay-Rheims Bible
Then Jesus said to them: Amen, amen I say unto you: Except you eat the flesh of the Son of man, and drink his blood, you shall not have life in you.

English Revised Version
Jesus therefore said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man and drink his blood, ye have not life in yourselves.

King James Bible
Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you.

World English Bible
Jesus therefore said to them, "Most certainly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you don't have life in yourselves.

Young's Literal Translation
Jesus, therefore, said to them, 'Verily, verily, I say to you, If ye may not eat the flesh of the Son of Man, and may not drink his blood, ye have no life in yourselves;

John 6:53 Additional Translations ...