What is the theme of book 22 of the odyssey?

In book 7 Odysseus is on his way to the palace of Alcinous, the king of the Phoenicians. Athena helps him travel to the palace safely and tells him to appeal to the queen. Once he arrives at the palace he begs the queen and king to help him on his journey. They are so moved and impressed that they not only offer him safe passage but also their daughters hand in marriage.