John 4:50

Go thy way. Once the necessary transformation had taken place, there was no delay in the granting of the request, albeit in a way the father had not expected. He had besought Jesus to “come down” to Capernaum, but Jesus told him simply, “Go thy way.” Thus the nobleman was required to depart without evidence that his request had been granted (see on v. 48). His faith was put to the test. He must take the gift, if at all, by faith. He must act in faith, believing that he had received what he came to ask for.

Liveth. The Greek expresses the idea that the son not only “lives,” but that he will keep on living.

The man believed. It had been his intention to see before he would believe; now he accepted Jesus at His word. He acted in faith, and as a result peace and joy filled his heart (see DA 198-200). See on ch. 1:12.