2 Kings 8:20

In his days Edom revolted from under the hand of Judah
Who had been tributary to Judah ever since the times of David, for the space of one hundred and fifty years:

and made a king over themselves;
for though they are said to have kings, those were only deputy kings, as in ( 1 Kings 22:47 ) and now the prediction of Isaac began to be accomplished, ( Genesis 27:40 ) .