Cross reference
John 2:9
9 And when the ruler of the feast tasted the water now become wine, and knew not whence it was (but the servants that had drawn the water knew), the ruler of the feast calleth the bridegroom,
John 4:46
46 He came therefore again unto Cana of Galilee, where he made the water wine. And there was a certain nobleman, whose son was sick at Capernaum.
John 7:17
17 If any man willeth to do his will, he shall know of the teaching, whether it is of God, or `whether' I speak from myself.
Psalms 119:100
100 I understand more than the aged, Because I have kept thy precepts.