Good that is not presented in love may be evil spoken of. But it is also true that good presented in love may be evil spoken of Act 13:45.
We must speak as led by the HolySpirit who will unction us to consider the heart of the hearer.
Those hearers who have a LoveOfTheTruth readily receive the truth and so respond to gentleness. Those who have not a LoveOfTheTruth resist the truth and therefore invite rebuke in boldness Mat 23:33.