And [David] smote Moab; and the Moabites became David’s servants, and brought gifts. I Chronicles 18:2.
You can never be served by those you have not conquered. Whatever you subdue will release their gifts to you. Is there some land of ‘Moab’ holding back your dues; your milk and honey? If that land should produce for you, then you should proceed to subdue it, so that it may serve you and bring you ‘gifts.’
Even in the natural, you do not throw your seed upon some strange fallow ground and expect it to yield you a harvest. Only the land subdued by force of weeding and ploughing gives ‘gifts’ to its sower.
The anointing does not usually automatically compel a land to release to you your dues. You have to go forth to conquer it. David had already been anointed king, but that anointing alone did not force Moab to serve him or bring him his dues, until he went out to subdue it.
The land will yield to you your milk and honey not necessarily because you have been anointed, but especially because you have conquered it. The anointing is not for you to sit down but to go forth and conquer (Matthew 4:1; Acts 10:38).
5 And when the Syrians of Damascus came to Hadarezer king of Zobah, David slew of the Syrians two and twenty thousand men.
6 …and the Syrians became David’s servants, and brought gifts (1 Chronicles 18:5-6).
The Moabites and Syrians are waiting to serve you, and bring to you your arrears of gifts, but not before you have conquered them.
From The Preacher’s diary.