Shimei expressed his agreement with the expression what you say is good,
and the promise that he would carry out Solomon’s command. The language that Shimei chose for his agreement is noteworthy for anyone who would argue that Shimei’s agreement was gained under the threat of force. Also, as a subject of the king, he had the obligation to obey whether or not he was threatened. We could very well argue that what some would call a threat was simply a warning of the consequences of disobedience.
There is another question that may arise when we compare 1 Kings 2:38 with 1 Kings 2:42. However, we will have to reach that point to look at that question.
38 Schimeï répondit au roi: C'est bien! ton serviteur fera ce que dit mon seigneur le roi. Et Schimeï demeura longtemps à Jérusalem.