The reference to 3,700 men is found in the context of the military support that came to David during his reign as king over Israel. This specific number is mentioned in the genealogical and military records that highlight the organization and strength of David's forces.

Biblical Context:

The mention of 3,700 men is found in 1 Chronicles 12, which details the various groups of warriors who joined David at Hebron to turn the kingdom of Saul over to him, as the LORD had said. This chapter provides a comprehensive list of the tribes of Israel and the number of warriors each contributed to David's cause.

1 Chronicles 12:24-26 :

"From the sons of Judah, bearing shield and spear: 6,800 armed for battle; from the sons of Simeon, mighty men of valor for war: 7,100; from the sons of Levi: 4,600, including Jehoiada, leader of the house of Aaron, with 3,700 men."

In this passage, the 3,700 men are specifically associated with Jehoiada, who was a leader of the house of Aaron. This indicates that these men were likely Levites, a tribe set apart for religious duties, but who also played a role in military support during this period.

Historical and Theological Significance:

The inclusion of the 3,700 men under Jehoiada's leadership highlights the involvement of the Levites in the political and military affairs of Israel, despite their primary religious functions. This reflects the broader theme of unity among the tribes of Israel in support of David's kingship, which was seen as divinely ordained.

The Levites' participation in military matters, as seen with these 3,700 men, underscores the multifaceted roles that members of this tribe could assume. It also illustrates the comprehensive nature of David's support, drawing from all tribes and classes within Israel, including those traditionally focused on religious service.

Related Themes and Concepts:

· Unity of Israel: The gathering of various tribes, including the Levites, to support David signifies the unity and collective purpose among the Israelites during this pivotal moment in their history.
· Divine Ordination of Leadership: The support for David, including the 3,700 men, is portrayed as fulfillment of God's promise to establish David as king, emphasizing the divine right and legitimacy of his rule.
· Role of the Levites: While primarily known for their religious duties, the Levites' involvement in military support reflects their broader role in the community and their commitment to the nation's welfare.

The account of the 3,700 men serves as a testament to the diverse and unified support that David received, which was crucial in establishing his reign and fulfilling the divine plan for Israel.