Final answer:
Paul's teachings highlight that harmful communication can corrupt good morals, underscoring the significance of virtuous communication within the Christian context.
Step-by-step explanation:
The question refers to a biblical context involving Paul's teachings related to communication and its moral implications. The specific phrase "evil communication" is often attributed to Paul's words in the New Testament, emphasizing that bad company or harmful communication can corrupt good morals and values. While the provided references of Matthew (MT) and Acts (AC) do not directly contain the statement about "evil communication," they illustrate scenarios where the spoken word and actions play crucial roles in influencing others, highlighting the importance of virtuous communication within the Christian context.