John 2:9

When the ruler of the feast had tasted the water that was made wine, and knew not whence it was: (but the servants which drew the water knew;) the governor of the feast called the bridegroom,

Cross-reference

John 4:46 notes this miracle at Cana as the first sign, setting the stage for the second sign in the same village.

Exodus 7:20 turns water to blood as a plague — here water becomes wine as a blessing, mirroring Moses' first sign with a joyful outcome.