As he clothed himself with cursing like as with a garment - Moral qualities are often compared with raiment - as that in which we “appear” to our fellow-men. See 1 Peter 5:5; Job 29:14.
So let it come into his bowels like water - Margin, “within him.” Hebrew, “In his midst.” Let it penetrate him through and through. Let no part of him be unaffected by it.
And like oil into his bones - As if oil flowed through all his bones, so let the effects of cursing pervade his whole frame. The prayer is, that his entire nature might feel the effects of cursing; that he might know to the full what he was endeavoring to bring on others.