The answer is: 10

1 Kings 11:31 - Jeroboam is promised ten tribes to rule over as a result of Solomon's disobedience. This separation foreshadows the eventual division of the united monarchy into Israel and Judah, leading to a rich tapestry of narratives in the Bible, highlighting themes of loyalty versus betrayal among God's chosen people.

Jeroboam’s promise of ten tribes is a pivotal moment in biblical history, setting the stage for a profound narrative of separation and conflict. 1 Kings 11:31 captures this turning point, reflecting God’s response to Solomon’s wayward heart. What's fascinating about the division of the kingdoms is that it resonates throughout scripture, echoing deeper themes of fidelity, sovereignty, and the divine retribution for failing to uphold a covenant with God.

Historically, Jeroboam becomes the first king of the northern kingdom of Israel, governing primarily over the ten tribes that embraced him. This is important because it essentially marks the end of a unified Israel, leading to the emergence of divergent identities—an idea richly woven through subsequent biblical stories. There’s an element of drama here: Jeroboam, once a servant, rises to rule, while Solomon’s lineage faces tumult as a struggle for power unfolds.

Here’s a tidbit you might find intriguing: The very name "Jeroboam" derives from Hebrew roots which can be interpreted as "he increases the people.” It's symbolic, isn’t it? His reign witnesses the proliferation of worship practices, although coupled with idolatry, as he enacts changes reflecting deep-seated fears of loyalty. Thus, the journey of the ten tribes highlights the cascading results of choices influenced by fear, leading generations to grapple with faith, identity, and the longing for significance amidst evolving challenges.