'Interest' in the Bible

Thus much I say in your own interest; not to lay a trap for you, but to help towards what is becoming, and enable you to wait on the Lord without distraction.

Is God simply thinking about the oxen? Or is it really in our interest that He speaks? Of course, it was written in our interest, because it is His will that when a plough-man ploughs, and a thresher threshes, it should be in the hope of sharing that which comes as the result.