'Increase' in the Bible

Then she said, "Please may the king remember Yahweh your God, {to prevent the increase of blood avengers who kill}, [so that they] not wipe out my son." He said, "{As Yahweh lives}, surely not one hair shall fall from your son to the ground."

Then Joab said to the king, "May Yahweh your God increase the people a hundred times {what they are} as the eyes of my lord the king are seeing. But my lord the king, why does he desire this thing?"