The answer is: Jeroboam II

2 Kings 14:23-29 - Jeroboam II reigned for 41 years, showcasing a time of prosperity in Israel despite the impending judgment due to idolatry and injustice. His reign parallels King Uzziah of Judah (also known as Azariah), who similarly experienced military success and wealth (2 Kings 15:1-7). Interestingly, both kings’ periods are marked by territorial expansion and the waning influence of surrounding nations.

Jeroboam II’s reign, lasting an impressive 41 years, serves as a fascinating showcase of both prosperity and impending peril. It’s noteworthy that this era was characterized not just by territorial expansion, but also by a rich cultural and economic flourishing. The routines of daily life, often marked by agricultural abundance, allowed for a dynamic Israel where trade thrived, especially with nearby nations, elevating Israel's status amidst shifting regional powers.

While wealth often spiraled into spiritual decay, as rookie prophets like Amos later challenged the society's prevailing idolatry and inequality, Jeroboam II remains pivotal. His reign matters in biblical history as authoritarian leaders can both stabilize and destabilize a nation simultaneously. The Book of Amos details the social injustices during this generous time, offering a stirring reminder that prosperity can create a lethargy towards ethics.

Amusingly, although often overshadowed in popularity, Jeroboam II is one of the successful figures who strategically navigated external threats. His rivalry with various neighbors meant that Israel often showcased its military prowess and occasionally flexed its muscles against those who sought to impede its rapid growth.

Moreover, there’s a satisfying symmetry in linking Jeroboam II and Uzziah's reigns—like two parallel lines! They symbolize periods when divine favor seems paired with floral success on the earthly level, yet both intriguingly drift on the unnoticed potholed road of spiritual disconnection.