John 4:48
Jesus said to him,
"Unless you people see signs and
wonders, you will
not believe."
"Teras" means something very unusual, out of the ordinary,
amazing, or astonishing.
"Dunamis". A "power". It is sometimes used of ordinary
power, but is often translated "miracle". It
is often used in
combination with "semeion" and "teras".
"Dunamis" emphasizes
the source of the event.