From Longman Dictionary of Contemporary Englishhave the goodness to do somethinghave the goodness to do somethingold-fashioned formalLET/ALLOW used when asking someone to do something in an extremely polite way Please have the goodness to wait. → goodness
Examples from the Corpus
have the goodness to do something• But I hope to learn these soon if anybody will have the goodness to bear with me. 