And keep the charge of the Lord thy God
 Which may in general respect his whole walk and conversation, and his obedience to the law and will of God; and in particular his just government of Israel committed to his charge: 
 to walk in his ways;
 directed to in his word: 
 to keep his statutes and his judgments;
 his laws, ceremonial, moral, and judicial: 
 and his testimonies;
 as the above laws, which testify of his mind, and declare what he would have done and observed: 
 as it is written in the law of Moses;
 which a king of Israel was obliged to write a copy of, keep by him, and read it, and rule according to it, ( Deuteronomy 17:18-20 ) : 
 that thou mayest prosper in all that thou doest, and whithersoever
 thou turnest thyself;
 to reign in righteousness, and according to the law of God, is the only way to have a prosperous and happy reign: or "that thou mayest act wisely" F16; the law of God furnishing out the best rules of government and maxims of policy; see ( Deuteronomy 4:6 Deuteronomy 4:7 ) .