John 2:1
Jesus heaps great honor on marriage by using such an event to manifest His glory. The apostle Paul writes, "Marriage is honorable among all" (Hebrews 13:4), but society increasingly scorns marriage, a fact clearly seen in rampant premarital sex and divorce upon demand. Like Christ's coming, a wedding is a joyous celebration.
Jesus and at least six of His disciples were invited to the wedding, suggesting that the wedding couple were concerned about the character of their guests. As His blessing and presence are essential to marital happiness, Christ must be involved in our marriages. However, those who desire His involvement must invite Him in. Had Jesus not been invited to this wedding, a serious problem would have marred the marriage feast. We can learn that couples in whose marriage Christ is involved have a great advantage in solving problems that arise later.
Martin G. Collins
The Miracles of Jesus Christ: Water Into Wine (Part One)

On the third day, a wedding took place in Cana of Galilee, where Jesus' mother was present. Jesus performed His first miracle there, changing water into wine, highlighting a ministry of generosity and joy. His presence at the wedding honored marriage, showing that inviting Him into such unions brings essential blessing and aid in solving future problems. The wedding couple's concern for their guests' character is evident as Jesus and six disciples were invited. Additionally, the wine Jesus created was fermented, as indicated by the Greek term "oinos," reflecting His knowledge of good wine's qualities. This event marked the beginning of a ministry centered on grace and truth.