Verses with the word confederacy in the Old Testament (2 verses):

Isaiah 8:12
Say ye not, A confederacy, to all them to whom this people shall say, A confederacy; neither fear ye their fear, nor be afraid.

Obadiah 1:7
All the men of thy confederacy have brought thee even to the border: the men that were at peace with thee have deceived thee, and prevailed against thee; that they eat thy bread have laid a wound under thee: there is none understanding in him.