There are two places in Scripture where greetings were refused. The first was when David sent a beautiful message to Nabal—"Thus shall ye say to him that liveth in prosperity, Peace be both to thee, and peace be to thine house, and peace be unto all that thou hast." 1 Sam. 25:6. But Nabal refused it, and came under the judgment of God.
In the second case, David sent to comfort Hanun when his father died. But poor Hanun had evil counselors who said, Don't listen to it; he doesn't mean what he says. How many dear souls are hindered now in a similar way by bad counselors.