John Gill Commentary John 4:52

"So he inquired of them the hour when he began to amend. They said therefore unto him, Yesterday at the seventh hour the fever left him." — John 4:52 (ASV)

Then inquired he of them the hour
He did not at all hesitate about the truth of it, or was in any surprise upon it; but that he might compare things together, he asked the exact time,

when he began to amend ;
or grow better; for he seemed to think, that his recovery might be gradual, and not all at once, as it was:

and they said unto him, yesterday at the seventh hour ;
which was one o'clock in the afternoon:

the fever left him ;
entirely at once, so that he was perfectly well immediately.