In his marvelous book-length exposition of 1 & 2 Samuel, A Son To Me (Canon Press, 2003), Peter Leithart makes this intriguing suggestion: “Justification by faith was the foundation of David’s politics” (p.305).
The context leading up to that statement are these remarks on II Samuel 22:
David’s enemies bring a “case” against him, and David appeals to Yahweh, the Judge of heaven and earth, to decide in his favor. David’s deliverance from his enemies is his justification, concrete evidence of the Lord’s verdict in favor of His king, His declaration of righteousness. As we have seen throughout this book, this was the bedrock of David’s treatment of Saul and other enemies; knowing thyat Yahweh will vindicate the righteous, Davcid could rest and wait on the Lord. Justification by faith was the foundation of David’s politics.
I’m not entirely sure what Leithart has in mind with that, i.e., how it applies to how anyone who is justified in Christ by faith should act politically, but it is surely a thought worth pursuing.
David C. Innes is associate professor of politics at The King’s College in New York City, and co-author of the forthcoming Left, Right, and Christ: Evangelical Faith in Politics (Russell Media).