John Wesley on Deuteronomy 33:23

Satisfied with favour - With the favour of God. That only is the favour that satisfies the soul. They are happy indeed that have the favour of God; and they shall have it, that place their satisfaction in it. And full with the blessing of the Lord - Not Only with corn, wine and oil, the fruit of the blessing, but with the blessing itself, the grace of God, according to his promise and covenant. Possess thou the west and the south - Or, the sea and the south. This is not to be understood of the place, that his lot should fall there, for he was rather in the east and north of the land; but of the pleasures and commodities of the west or of the sea, which were conveyed to him from his neighbour Zebulun; and of the south, that is, from the southern tribes and parts of Canaan, which were brought to him down the river Jordan, and both sorts of commodities were given him in exchange for the fruitful rich soil which he had in great abundance.