'Devour' in the Bible

Then Abner called to Joab and said, "Will [the] sword devour forever? Do you not know that [there] will be bitterness in the end? {How long} will you not tell the people to turn {away from pursuing} their brothers?"

Then David said to the messenger, "Thus you shall say to Joab, '{Do not feel badly about this matter}; {now one and then another} the sword will devour. Intensify your attack on the city and overthrow it.'" And he encouraged him.