Now when he was in Jerusalem at the Passover, during the feast, many believed in his name, observing his signs which he did.

 (ii) It uses the word dunamis ( G1411) . Dunamis literally means power; it is the word from which dynamite comes. It can be used of any kind of extraordinary power. It can be used of the power of growth, of the powers of nature, of the power of a drug, of the power of a man's genius. It always has the meaning of an effective power which does things and which any man can recognize. (iii) It uses the word semeion ( G4592) . Semeion means a sign. This is John's favourite word. To him a miracle was not simply an astonishing happening; it was not simply a deed of power; it was a sign. That is to say, it told men something about the person who did it; it revealed something of his character; it laid bare something of his nature; it was an action through which it was possible to understand better and more fully the character of the person who did it. To John the supreme thing about the miracles of Jesus was that they told men something about the nature and the character of God. The power of Jesus was used to heal the sick, to feed the hungry, to comfort the sorrowing; and the fact that Jesus used his power in that way was proof that God cared for the sorrows and the needs and the pains of men. To John the miracles were signs of the love of God. 