Lift up the Heel against Me
(To). To kick me (physically or morally); to treat with contumely or contempt: to oppose, to become an enemy. As an unruly horse kicks the master who trusts and feeds him
“Yea, mine own familiar friend, in whom I trusted, which did eat of my bread, hath lifted his heel against me.” - Psalm xli. 9.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894