The foundation of David's kingdom relied heavily on a dedicated military elite. These heroes held special roles and ranks, with many initially joining David as private fighters before advancing to become senior commanders in his army [ביאור שטיינזלץ]. While a similar roster of warriors appears in the book of Samuel, that account names only the most famous men who were constantly by David's side. The present record provides a broader view, adding heroes omitted from the earlier account and noting their total number [מלבי״ם].
The timeline of their support spans different eras of David's rise to power. Much of this backing began during the reign of Ish-bosheth, as these warriors successfully fought David's battles. However, some men aligned themselves with David much earlier, joining him while he was still a fugitive fleeing from Saul. They were motivated by a strong belief that he was ultimately destined to rule over the Israelites [רלב״ג].
These loyalists made exceptional, deliberate efforts to ensure his success [ביאור שטיינזלץ]. Their actions were entirely focused on establishing his royal authority. They actively strengthened his claim to the throne and spoke to the hearts of the people, persuading them to accept David as their king. Through their dedication, they helped fulfill the promise made by God that David would rule [מצודת דוד].