The Pulpit Commentary - 2 Samuel 18:22
Seeing … thou hast no tidings ready. This was not true; there were most important tidings ready. But it is the translation which is in fault. What Joab said is, "Seeing thou hast no tidings that find," that is, no message that will find for thee the king's favour and a reward. read more
The Pulpit Commentary - 2 Samuel 18:21
Cushi . This is not a proper name, but signifies that he was an Ethiopian, that is, a negro slave in Joab's service. Joab was unwilling to expose Ahimaaz to me king's displeasure, and we gather from 2 Samuel 18:27 that the sending of a person of low rank would be understood to signify evil tidings. The bearer of good news received a present, and therefore the passing over all Joab's personal friends to send a slave was proof that the message was not expected to bring the bearer honour or... read more