'Commandment' in the Bible

The words of Jonadab the son of Rechab, that he commanded his sons, not to drink wine, are performed; and to this day they drink none, for they obey their father's commandment: but I have spoken to you, rising up early and speaking; and you have not listened to me.

Because the sons of Jonadab the son of Rechab have performed the commandment of their father which he commanded them, but this people has not listened to me;

Jeremiah said to the house of the Rechabites, Thus says Yahweh of Armies, the God of Israel: Because you have obeyed the commandment of Jonadab your father, and kept all his precepts, and done according to all that he commanded you;