Although Joab had been loyal to David all this time, he now sides with Adonijah. While I disagree with him, I can clearly see Joab’s point. He wants the Kingdom to continue. In fact he is so loyal to David he feels supporting the new king shows it. In his mentality, supporting the new young excited man secures the Kingdom for David & family. All the while, to you and me, his loyalty has ceased.
Loyalty runs out. You may have friends now that won’t be your friends later in life. Things change, people change. The key is to be able to understand their point of view and not take it as a personal attack.
Joab was thinking of himself. He felt that supporting the new King secured his future better than supporting the old King. He threw years of service and loyalty out the door by worrying about what might happen next! People will think of themselves. No matter how loving a person may seem, “I” is still #1. We can’t help it, we can’t get around it. It is important that we know & realize that loyalty runs out.