But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness (kindness), goodness, faith, meekness, temperance: against such there is no law. Galatians 5:22-23
Kindness means to show sympathy, helpfulness, friendliness and thoughtfulness, towards another person. Kindness gives a blessing to others, even when they do not deserve it and it withholds punishment that is due. Kindness is being merciful. The words kindness and mercy can be interchanged.