to do justly, to love mercy, and to walk humbly with your God?”
According to Vines Expository Dictionary of Bible Words, “Mercy is the outward manifestation of pity; it assumes need on the part of him who receives it, and resources adequate to meet the need on the part of him who shows it.”
Ideally, forgiveness is based on repentance; but whether or not a person repents and asks for forgiveness, they are still in need of mercy (even if they do not deserve it). If nothing else, we can pray that a merciful God will open their eyes and show them their true condition. The question is not whether or not someone deserves mercy, but whether or not they need mercy, and whether or not my spiritual life is rich enough to extend it to them.