There is a very limited place for abortion (when the mother's life is in danger) and no place whatsoever for gay marriage under traditional Jewish law.
Any Jew in favor of abortion on demand and/or gay marriage is not acting in accordance with any "sacrament" but rather in accordance with a leftist secular view - as is any Christian who supports these notions.
Let me clarify. I was speaking of today’s liberal Jews. E.g. Alan Dershowitz. And the vast majority of Jews that I personally know. I can count on one hand the number of politically conservative Jews I’m friends with. But even the liberals are pretty clear about intermarriage. I almost married a Jewish woman. She wouldn’t because she told me her dad would never accept me, even though he liked me on a personal level. Fine. No real problem. She also rejected a guy who was Jewish, but later converted to Jehovah’s Witness. Finally she accepted marriage to a Jewish man, much older. All was peaches and cream, with two children. They divorced recently and she admitted that they were never really compatable. She admitted she made a mistake by not accepting me. Oh, well. I’m happy now regardless.