'Act' in the Bible

So Joab sent to Tekoa and took from there a wise woman, and he said to her, "Please pretend to mourn and put on garments of mourning. You should not anoint yourself [with] oil, and you must act like this woman who has been mourning over the dead for {a long time}.

Then the servants of the king said to the king, "According to all that my lord the king chooses, {your servants are ready to act}!"

With the loyal, you act as loyal, and with the blameless, you show yourself blameless.