Catholic bishops are entering their final week of debate over hot-button issues facing young Catholics, including how the church should welcome gays and respond to the clerical sex abuse scandal that has discredited many in the church hierarchy. The month-long synod of bishops ends next Saturday with the adoption by the 260-plus cardinals, bishops and priests of a final document and approval of a separate, shorter letter to the world’s Catholic youth. Some of the youth delegates to the meeting have insisted that the final document express an inclusive message to make LGBT Catholics feel welcome in a church that...