Jesus said unto him,
Go your way; your son lives.
And the man believed the word that Jesus had spoken unto him, and he went his way.
All Commentaries on John 4:50 Go To John 4
Cyril of Alexandria
AD 444
Thus believing he ought to have come, but Christ doth not reject our lack of apprehension; but benefiteth even the stumbling, as God. That then which the man should have been admired for doing, this does he teach him even when he doth it not, revealed alike as the Teacher of things most lovely, and the Giver of good things in prayer. For in Go thy way is Faith: in thy son liveth is the fulfilment of his longings, granted with plenteous and God-befitting Authority.