2nd Sign
Servant of King Herod's son
The servant believed when Jesus spoke the command, "Go! Your son lives." When he realized that the exact time when Jesus spoke this, the son was healed, then his whole household believed also. This record shows Jesus' authority over distance and power of his words.
3rd Sign
Man at Pool of Bethesda
The pool was a healing center for the god, Asclepius, whose symbol was the snake around a pole. The moving of the water was caused from either an underground spring or as the upper pool emptied into the lower pool. Verses 3b-4 are not in the earliest manuscripts.
The man believed and was healed even before knowing it was Jesus who healed him. Again we see the power of Jesus' commands and how it attests to his authority as the Son of God. His authority (and ours) is over sin and sickness as well as over the traditions of men.