John 4:53

53.And he believed, and his whole house. It may appear absurd that the Evangelist should mention this as the commencement of faith in that man, whose faith he has already commended. Nor can it be supposed that the wordbelieve — at least in this passage — relates to the progress of faith. But it must be understood that this man, being a Jew and educated in the doctrine of the Law, had already obtained some taste of faith when he came to Christ; and that he afterwards believed in the saying of Christ was a particular faith, which extended no farther than to expect the life of his son. But now he began to believe in a different manner; that is, because, embracing the doctrine of Christ, he openly professed to be one of his disciples. Thus not only does he now believe that his son will be cured through the kindness of Christ, but he acknowledges Christ to be the Son of God, and makes a profession of faith in his Gospel. His whole family joins him, which was an evidence of the miracle; nor can it be doubted that he did his utmost to bring others along with him to embrace the Christian religion.