The curse of David proves that Joab was not justified as blood-revenger or Goel II Samuel 3:27 in taking away Abner' s life.
That leaneth on a staff - Rather, a crutch. The phrase denotes one lame or infirm. For similar instances of hereditary disease and poverty as a punishment of great sin, see I Samuel 2:31-33, I Samuel 2:36; II Kings 5:27; John 9:2.
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