'Commandments' in the Bible

Then I took the deed of the purchase, the sealed [copy containing] the commandments and the rules, together with the [one] that was open.

Then Jeremiah told the house of the Rechabites, "This is what the LORD God of the Heavenly Armies, the God of Israel says: "Because you obeyed the commandment of your ancestor Jonadab, have observed all his commandments, and have done everything that he commanded you,'