John 2:1-2
“On the third day there was a marriage in Cana of Galilee. And Jesus was called to the marriage. And the mother of Jesus was there, and His brethren.”
I said before that He was best known in Galilee; therefore they invite Him to the marriage, and He comes; for He looked not to His own honor, but to our benefit. He who disdained not to “take upon Him the form of a servant”, would much less disdain to be present at the marriage of servants; He who sat down “with publicans and sinners”, would much less refuse to sit down with those present at the marriage. Assuredly they who invited Him had not formed a proper judgment of Him, nor did they invite Him as some great one, but merely as an ordinary acquaintance; and this the Evangelist has hinted at, when he says, “The mother of Jesus was there, and His brethren.” Just as they invited her and His brethren, they invited Jesus.
Source: Homilies on the Gospel of John (New Advent)