Psalms 109:9-19

9 Let his children be fatherless and his wife a widow.
10 Let his children be continually vagabonds and beg; let them seek their bread out of their desolate places.
11 Let the extortioner catch all that he has, and let the strangers spoil his labour.
12 Let there be no one to extend mercy unto him: neither let there be any to favour his fatherless children.
13 Let his posterity be cut off, and in the generation following let their name be blotted out.
14 Let the iniquity of his fathers be remembered with the LORD, and let not the sin of his mother be blotted out.
15 Let them be before the LORD continually, that he may cut off the memory of them from the earth.
16 Because he did not remember to show mercy but persecuted the man who is poor in spirit and destitute and broken in heart, that he might slay him.
17 As he loved the curse, so let it come unto him; as he delighted not in the blessing, so let it be far from him.
18 As he clothed himself with the curse like as with his garment, and it entered into his bowels like water and like oil into his bones.
19 Let it be unto him as the garment which covers him and for a girdle wherewith he is girded continually.

Psalms 109:9-19 Meaning and Commentary

To the chief Musician, A Psalm of David. This psalm was written by David, under the inspiration of the Holy Spirit, concerning Judas the betrayer of Christ, as is certain from Acts 1:16 hence it is used to be called by the ancients the Iscariotic psalm. Whether the occasion of it was the rebellion of Absalom, as some, or the persecution of Saul, as Kimchi; and whoever David might have in view particularly, whether Ahithophel, or Doeg the Edomite, as is most likely; yet it is evident that the Holy Ghost foresaw the sin of Judas, and prophesies of that, and of the ruin and misery that should come upon him; for the imprecations in this psalm are no other than predictions of future events, and so are not to be drawn into an example by men; nor do they breathe out anything contrary to the spirit of Christianity, but are proofs of it, since what is here predicted has been exactly accomplished. The title in the Syriac version is, "a psalm of David when they created Absalom king without his knowledge, and for this cause he was slain; but to us it expounds the sufferings of the Christ of God;" and indeed he is the person that is all along speaking in this psalm.
The Jubilee Bible (from the Scriptures of the Reformation), edited by Russell M. Stendal, Copyright © 2000, 2001, 2010