Wedding at Cana
Jesus turns water into wine at the wedding in Cana. He says this is not his wedding, which means it is related to his wedding. The numbers point to another prominent wedding story in the Bible.
John 2:1-11
Count
3+6+2+3+9 = 23 = Hosea
Hosea
Hosea is a wedding story. It's the story of Yahvah telling a prophet to marry a prostitute. They have trouble in their marriage because though he's faithful she is not, and she has a daughter and son by other men after having a son with the prophet.
The story of the prophet and the prostitute becomes a parable for the relationship between Yahvah and Israel, where Yahvah is the faithful husband, but Israel commits adultery by running to other gods. The book eventually moves to the issue of how Israel has broken covenant and what's going to happen.
It's unclear to me how exactly the story of Hosea and the wedding at Cana relate. The wedding at Cana does appear to be a picture of Jesus' own wedding in some way, and the story of Hosea is a parable for Yahvah and Israel's marriage, but how exactly, or why, these two are linked by the math is beyond me. The probability of the wedding at Cana story landing on one of the two or three most prominent wedding stories (Hosea, Ruth, Song of Solomon) is low so the linkage is likely correct, even if the meaning is unclear at the moment.