GOD'S WORD® Translation
Then the boy's father realized that it was the same time that Jesus had told him, "Your son will live." So the official and his entire family became believers.

American Standard Version
So the father knew that it was at that hour in which Jesus said unto him, Thy son liveth: and himself believed, and his whole house.

Berean Study Bible
Then the father realized that this was the very hour in which Jesus had told him, “Your son will live.” And he and all his household believed.

Douay-Rheims Bible
The father therefore knew, that it was at the same hour that Jesus said to him, Thy son liveth; and himself believed, and his whole house.

English Revised Version
So the father knew that it was at that hour in which Jesus said unto him, Thy son liveth: and himself believed, and his whole house.

King James Bible
So the father knew that it was at the same hour, in the which Jesus said unto him, Thy son liveth: and himself believed, and his whole house.

World English Bible
So the father knew that it was at that hour in which Jesus said to him, "Your son lives." He believed, as did his whole house.

Young's Literal Translation
then the father knew that it was in that hour in which Jesus said to him -- 'Thy son doth live,' and he himself believed, and his whole house;

John 4:53 Additional Translations ...