1 Kings 2:3

And keep the (b) charge of the LORD thy God, to walk in his ways, to keep his statutes, and his commandments, and his judgments, and his testimonies, as it is written in the law of Moses, that thou mayest prosper in all that thou doest, and whithersoever thou turnest thyself:

(b) He shows how hard it is to govern and that no one can do it well except he obey God.