וַיֹּ֕אמֶר בָּר֥וּךְ יְהֹוָ֖ה אֱלֹ֣הֵי שֵׁ֑ם וִיהִ֥י כְנַ֖עַן עֶ֥בֶד לָֽמוֹ׃
And he said: Blessed be the LORD, the God of Shem; And let Canaan be their servant.
Read kabbalistic (mystical) interpretation of Genesis 9:26: and classical mystical sources.