Luke 6:32

For if ye love them which love you, what thank have ye?.... Or, "what grace have ye?" this is no fruit, nor evidence of grace, nor any exercise of the true grace of love; nor is it any favour conferred upon the object loved, which deserves the respect shown, nor can any reward be expected for such treatment: and thus it is expressed in Matthew, "what reward have ye?" and the Arabic version renders it so here:

for sinners also love those who love them: men that are destitute of the grace of God, profligate sinners, even the worst of them, such as publicans, do this; Matthew 5:46.