As to the effectiveness of the language of Church teaching (“the language we speak is not communicating”), some distinctions need to be made. Communication is ineffective when the words are not understood by the listener. Communication is effective when the words are understood, even if the listener rejects the truth of the message. As regards the moral doctrine of the Church, the problem for many today is not unintelligibility, i.e, they cannot figure out what the Church teaches. Rather, that doctrine is understood quite well – and rejected.
That is not a failure to communicate, but rather a successful imparting of unwelcome knowledge. The Church’s mission is to call sinners to repentance, which starts with proclaiming the truths of the Gospel, however contrary they are to the lifestyle choices of those who hear that proclamation. Our absolute certainty in the truth of the Church’s doctrine and our belief in the efficacy of Divine grace teach us that the anger or sadness produced in a person being challenged to live according to God’s plan is salutary – and in many ways necessary.
(source: The Catholic Thing)

