'Have Mercy' in the Bible

And a Canaanite woman from that district came out and began to cry out [urgently], saying, “Have mercy on me, O Lord, Son of David (Messiah); my daughter is cruelly possessed by a demon.”

“Lord, have mercy on my son, for he is a lunatic (moonstruck) and suffers terribly; for he often falls into the fire and often into the water.