If the wife is unwilling, let the maid come?

No one denies that Martin Luther made that statement.  Yet, Protestants defend i,  Here's an example:
Biographer Ewald Plass notes of this quote, “The words, ‘If the wife is not willing, bring on the maid’ have been notoriously misconstrued by having been quoted out of context. As the following words clearly show, Luther is thinking of a separation and a remarriage, not a sort of concubinage.” [Ewald Plass, What Luther Says II:901, footnote 20]. This is substantiated by a similar statement from Luther in the same year in the treatise, ‘The Estate of Marriage’.
(as reported on the Beggars all blog).


Out of context?  Really?  In what possible context could these words be acceptable?  Have they not read the words of Jesus Christ?

Matthew 19:9

King James Version (KJV)

 ⁹And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery.

And also:

Matthew 19:6

King James Version (KJV)

 ⁶Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder.

Sincerely,

De Maria