What significant issue led to Solomon's reign beginning well but ending poorly?

The significant issue that led to Solomon's reign starting well but ultimately ending poorly was foreign marriages and idolatry. Solomon, known for his wisdom and wealth, initially governed Israel with great skill and established a prosperous kingdom. However, his later years were marked by a series of alliances through marriages with foreign nations, which brought in not only political partnerships but also introduced the worship of foreign gods into Israel.

These foreign wives influenced Solomon to build high places for the worship of their deities, leading the people of Israel into idolatry. This deviation from the worship of Yahweh angered God and ultimately resulted in divine judgment against Solomon and the nation, fracturing the kingdom after his death. The integration of these practices undermined the monotheistic faith that was central to Israel's identity and led to significant spiritual decline, impacting the nation in the years that followed. This aspect of Solomon's reign is crucial in understanding the consequences of his decisions and the importance of faithfulness in leadership.