'Mercy' in the Bible

If Your people Israel are defeated before an enemy,because they have sinned against You,and they return to You and praise Your name,and they pray and plead for mercybefore You in this temple,

for when you return to Yahweh, your brothers and your sons will receive mercy in the presence of their captors and will return to this land. For Yahweh your God is gracious and merciful; He will not turn His face away from you if you return to Him.”