Genesis 38:1

1.And it came to pass at that time, that Judah. Before Moses proceeds in relating the history of Joseph, he inserts the genealogy of Judah, to which he devotes more labor, because the Redeemer was thence to derive his origin; for the continuous history of that tribe, from which salvation was to be bought, could not remain unknown, without loss. And yet its glorious nobility is not here celebrated, but the greatest disgrace of the family is exposed. What is here related, so far from inflating the minds of the sons of Judah, ought rather to cover them with shame. Now although, at first sight, the dignity of Christ seems to be somewhat tarnished by such dishonor: yet since here also is seen that “emptying” of which St. Paul speaks, (138) it rather redounds to his glory, than, in the least degree, detracts from it. First, we wrong Christ, unless we deem him alone sufficient to blot out any ignominy arising from the misconduct of his progenitors, which offer to unbelievers occasion of offense. Secondly, we know that the riches of God’s grace shines chiefly in this, that Christ clothed himself in our flesh, with the design of making himself of no reputation. Lastly, it was fitting that the race from which he sprang should be dishonored by reproaches, that we, being content with him alone, might seek nothing besides him; yea, that we might not seek earthly splendor in him, seeing that carnal ambition is always too much inclined to such a course. These two things, then, we may notice; first, that peculiar honor was given to the tribe of Judah, which had been divinely elected as the source whence the salvation of the world should flow; and secondly, that the narration of Moses is by no means honorable to the persons of whom he speaks; so that the Jews have no right to arrogate anything to themselves or to their fathers. Meanwhile, let us remember that Christ derives no glory from his ancestors; and even, that he himself has no glory in the flesh, but that his chief and most illustrious triumph was on the cross. Moreover, that we may not be offended at the stains with which his ancestry was defiled, let us know that, by his infinite purity, they were all cleansed; just as the sun, by absorbing whatever impurities are in the earth and air, purges the world.