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1 Kings 2:3ESV·author unknown

and keep the charge of the LORD your God, walking in his ways and keeping his statutes, his commandments, his rules, and his testimonies, as it is written in the Law of Moses, that you may prosper in all that you do and wherever you turn,

John Gill Reformed Baptist @doctorgill

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...

Jamieson-Fausset-Brown Reformed @jfbcommentary

keep the charge of the Lord thy God--that is, the divine law in all its ceremonial as well as moral requirements. But particular reference was intended to its political institutions, as it was only by strictly maintaining the conduct that became the Hebrew monarch (Deu 17:10-20), that he would secure the blessing of peace and prosperity to his reign (see on Deu 4:5; Deu 29:10).

Geneva Bible Notes Reformed @genevanotes

And keep the 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...