Mivchar (מִבְחָר, H4006) — the same spelling as H4005 (choice/best) — functions here as a personal name: Mivchar son of Hagri, one of David's Thirty Mighty Warriors (1 Chronicles 11:38). The name carries the meaning of 'chosen one' or 'the best/select,' appropriate for a member of the elite fighting force that surrounded and protected David. This is the honorific equivalent of a special forces designation — these were the finest warriors in Israel.
David's Thirty Mighty Warriors represent an extraordinary theology of gathered strength in service of the anointed king. Each warrior was personally chosen (mivchar), and together they formed the military backbone of David's kingdom. The New Testament parallel is Jesus calling His twelve disciples — each carefully chosen (John 15:16: 'You did not choose me, but I chose you') to be the foundation of a new community. The word bachar (to choose) runs through the theology of election: Israel was chosen (Deuteronomy 7:6), the king was chosen (1 Samuel 16:8–13), the disciples were chosen, and believers are chosen 'before the foundation of the world' (Ephesians 1:4). Being mivchar — the chosen one — is not about personal merit but about the sovereign grace of the One who chooses.