#Zebulun will live

This refers to the descendants of Zebulun. (See: [[:en:ta:vol2:translate:figs_metonymy]])

#He will be a harbor

Here "He" stands for sea towns that the people of Zebulun will inhabit or build. These cities will provide shelter for ships. (See: [[:en:ta:vol2:translate:figs_metonymy]])

#harbor

a part of the sea that is next to land and is a safe place for ships