In verses 7-15, Elisah predicts, to his face, that Hazael would kill the king. Actually Elisha only hints at it, but Hazael, knowing what he’s talking, about “felt ashamed.” (v. 11) Sadly, this shame was meaningless, because he went ahead with his plan and murdered the king anyway (v. 15).
Feeling ashamed about our sin is not enough. If it doesn’t lead to repentance, shame is meaningless.