Lamentations 3:22-23:

It is of the LORD'S mercies that we are not consumed, because his compassions fail not.
They are new every morning: great is thy faithfulness.

See also:

God’s Mercy and Compassion
Objection: James Set Patient Endurance of Sickness as the New Testament Standard for Believers
Objection: Epaphroditus Was Healed by God’s MERCY, Not His OBLIGATION