100 In Jacob, too, let us imitate the type of Christ, let there be some likeness of his actions in ourselves. We shall have our share with him, if we imitate him. He was obedient to his mother, he yielded to his brother, he served his father-in-law, he sought his wages from the increase, not from a division of the flocks. There was no covetous division, where his portion brought such gain. Nor was that sign without a purpose, the ladder from earth to heaven, wherein was seen the future fellowship between men and angels through the cross of Christ, whose thigh was paralyzed, that in his thigh he might recognize the Heir of his body, and foretell by the paralyzing of his thigh the Passion of his Heir.
Source: On the Death of Satyrus (New Advent)