'Refrain' in the Bible

Then Abner called to Joab and said, “Shall the sword devour forever? Do you not know that it will be bitter in the end? How long will you refrain from telling the people to turn back from following their brothers?”

so he sent messengers to Tekoa to bring a wise woman from there. He told her, "Please play the role of a mourner, wear the clothes of a mourner, and refrain from using makeup. Act like a woman who's been in mourning for the dead for many days.