Numbers 13 describes Moses sending twelve spies, one from each of the twelve tribes of Israel, to scout out the land of Canaan. Verse 10, "Of the tribe of Zebulun, Gaddiel the son of Sodi," simply identifies the representative spy selected from the tribe of Zebulun.

Let's break it down:

"Of the tribe of Zebulun": This indicates that Gaddiel belonged to the tribe of Zebulun. The tribes of Israel were descended from the twelve sons of Jacob (Israel).
"Gaddiel": This is the name of the individual spy chosen. Gaddiel means "God is my fortune" or "God is my goat."
"the son of Sodi": This specifies Gaddiel's father's name, Sodi. This was a common way to identify individuals in ancient times, linking them to their lineage. Sodi means "my secret" or "my confidant."

In essence, the verse serves as a record, stating that Gaddiel, son of Sodi, was the designated spy representing the tribe of Zebulun in this important mission. It's a piece of historical information within the larger narrative of the Israelites preparing to enter the Promised Land.

There's no specific deeper symbolic meaning attached to the names or lineage provided in this verse beyond their identification purpose within the narrative. However, some scholars analyze the meanings of the names in light of the individuals' later actions and attitudes, particularly in relation to the outcome of the spying mission.