Psalms 41:8

“An evil disease, [say they], cleaveth fast unto him, etc.] Not any bodily one, of which they might hope he would die; much less any foul disease, the disease of sin; but, as the phrase may be rendered, “a word of Belial” f577; that is, a wicked charge or accusation; a charge of sin brought against him by the sons of Belial, as of blasphemy and sedition, which they concluded would be fastened upon him, and stick by him, and in which they should succeed to their wishes; or else the shameful punishment the death of the cross, inflicted on him, which they fancied would fix an indelible mark of infamy and scandal on him, since cursed is he that hangeth on a tree; and [now] that he lieth, let him…”

“An evil disease--literally, "a word of Belial," some slander. cleaveth--literally, "poured on him." that he lieth--who has now laid down, "he is utterly undone and our victory is sure."”

“An evil disease - Margin, “a thing of Belial.” The Hebrew is literally “a word of Belial.” This has been very variously understood and interpreted. The Septuagint renders it: λόγον παράνομον logon paranomon - wicked word; “a wicked determination” (Thompson); that is, they formed a wicked purpose against him, to wit, by saying that he was now confined to his bed, and could not rise again. The Latin Vulgate renders it in a similar manner: Verbum iniquitum constituerunt adversum me. Luther: “They have formed a wicked device (Bubenstuck) against me;” they behave in a knavish or wicked manner. DeWette, “Destruction (Verderben) or punishnnent (Strafe) is poured upon him.” The term rendered…”

“An evil disease: Heb. A thing of Belial, Psa 38:3-7; Job 2:7, Job 2:8; Luk 13:16 and: Psa 3:2, Psa 71:11; Mat 27:41-46, Mat 27:63, Mat 27:64 Psalms 41:9”