Psalms 55:12

For it was not an enemy that reproached me, since in the case of an open adversary the situation would not have been so serious; then I could have borne it, for one expects no other treatment from an outspoken enemy, one endures his hostility; neither was it he that hated me that did magnify himself against me, seeking to carry out plans prompted by false ambition; then I would have hid myself from him, a course which he could not pursue with regard to a secret, treacherous foe, concerning whom one never knows when he will strike.