John the Apostle
John 4:48ESV·traditional attribution

So Jesus said to him, “Unless you see signs and wonders you will not believe.”

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have, I. Christ's coming into Galilee, Joh 4:43. Though he was as welcome among the Samaritans as he could be any where, and had better success, yet after two days he left them, not so much because they were Samaritans, and he would not confirm those in their prejudices against him who said, He is a Samaritan (Joh 8:48), but because...

Commenting on John 4:43-54

John Gill Reformed Baptist @doctorgill

Then said Jesus unto him,.... With some degree of roughness in his speech, and severity in his countenance, in a way of reproof for his unbelief, as if he could not heal his son without going down to Capernaum along with him: except ye see signs and wonders ye will not believe.

Albert Barnes Presbyterian @notesbybarnes

Verse 48. Except ye see signs, &c. This was spoken not to the nobleman only, but to the Galileans generally. The Samaritans had believed without any miracle. The Galileans, he said, were less disposed to believe him than even they were; and though he had wrought miracles enough to convince them, yet, unless they continually saw them, they would not believe. (g) "signs and wonders"