This should have been a good New Year’s for Aharon Friedman, a 34-year-old tax counsel for the Republicans on the House Ways and Means Committee. He spent time with his 3-year-old daughter, and could have been thinking about the influence he will have starting Wednesday, when his boss, Representative Dave Camp of Michigan, becomes chairman of the powerful tax-writing committee.

Instead, Mr. Friedman, an Orthodox Jew, finds himself scrutinized in the Jewish press, condemned by important rabbis, and attacked in a YouTube video showing about 200 people protesting outside his Silver Spring, Md., apartment on Dec. 19. They were angered by Mr. Friedman’s refusal to give his wife, Tamar Epstein, 27, a Jewish decree of divorce, known as a get.

The Friedman case has become emblematic of a torturous issue in which only a husband can “give” a get. While Jewish communities have historically pressured obstinate husbands to give gets, this was a very rare case of seeking to shame the husband in the secular world.

Holding signs saying, “Do the right thing” and “Free your wife,” the crowd included religious women with their heads covered, men in skullcaps and a rabbi with a bullhorn who shouted, “Withholding a get is abusive.”