A kingdom man is a man who visibly demonstrates the comprehensive rule of God underneath the Lordship of Jesus Christ in every area of his life.
The primary component upon which all else rests in a kingdom is the authority of the ruler. Without that, there is anarchy resulting in mess.
A kingdom always includes three fundamental components: a ruler, a realm of subjects who fall under his rule, and the rules or governances.
A kingdom man understands that God never said a godly life would be easy; He just said it would be worth it.