Funmentionables comes to the rescue of Newt, who reportedly wanted his second ex-wife to approve of an open marriage. Here is the Bible authority for the concept:

If he take himself another wife… —Exodus 21:10

If a man have two wives… —Deuteronomy 21:15

And here are the Bible characters who paved the way for Newt:

Abijah, Abraham, Ahab, Ahasuerus, Ashur, Belshazzar, Benhadad, Caleb, David, Eliphaz, Elkanah, Esau, Ezra, Gideon, Jacob, Jehoiachin, Jehoram, Jerahmeel, Joash, Lamech, Machir, Manasseh, Mered, Moses, Nahor, Rehoboam, Saul, Shaharaim, Simeon, Solomon, and Zedekiah.