Desolate, or amazed, or dismayed, or overthrown: of such imprecations I have spoken before. Their shame, i.e. their sinful and shameful actions, as shame is put for a shameful idol, Hosea 9:10, and as fear is oft put for the evil feared.
Related Commentaries of Psalms 40:15
Psalms 40:15
15 Let them be desolate for a reward of their shame that say unto me, Aha, aha.