Albert Barnes Commentary Judges 2:20

"And the anger of Jehovah was kindled against Israel; and he said, Because this nation have transgressed my covenant which I commanded their fathers, and have not hearkened unto my voice;" — Judges 2:20 (ASV)

This verse is connected with (Judges 2:13). The intermediate verses refer to much later times; they have the appearance of being the reflections of the compiler interspersed with the original narrative. But (Judges 2:20) catches up the thread only to let it fall immediately. All that follows, down to the end of (Judges 3:7), seems to be another digression, closing with words like those of (Judges 2:13).

It does not appear how this message was given to Israel, whether by Angel, or prophet, or Urim, nor indeed is it certain whether any message was given. The words may be understood as merely explaining what passed through the divine mind, and expressing the thoughts which regulated the divine proceeding.