For when the flesh alone controls a man, that man has no faith to help him resist selling his birthright and his soul to the devil of hell. For such a person is similar to the ass, who in her periods of heat cannot be made to change direction; when their minds are set upon their lusts, they will have them, whatever they cost. (A wild donkey accustomed to the wilderness, that sniffs the wind in her passion. In the time of her heat who can turn her away? All who seek her will not become weary; in her month they will find her. – Jer. 2:24)