'Be Merciful' in the Bible

Then hear thou up to heaven and be merciful unto the sin of thy people Israel, and bring thee again unto the land which thou gavest unto their fathers.

then hear thou up to heaven, and be merciful unto the sin of thy servants and of thy people Israel, that thou show them a good way to walk in, and give rain upon thy land that thou hast given unto thy people to inherit.

And be merciful, and work, and give every man according to his ways - even as thou only knowest every man's heart, for thou knowest the hearts of all the children of Adam -

and forgive Your people who have sinned against You and all the transgressions which they have committed against You, and make them objects of compassion before their captors, that they will be merciful to them