In the media's rush to draw conclusions from the mass wedding at the Vatican last Sunday, where some of the couples being wed had been cohabiting, one point seems to have been overlooked by nearly everyone: Pope Francis's choice of date for the nuptials.
On the Catholic calendar, the Church is currently in the midst of what is called ordinary time. During all of this July, August, and September, there is only one Sunday in which a feast takes precedence over the normal Sunday liturgy.
Pope Francis had his pick of Sundays to preside over the mass wedding, and he chose that very Sunday. It would seem, then, that he wished that the couples would, from then on, remember that feast every year as the one upon which they were married. There is something about the nature of that feast that Pope Francis wanted the couples to associate with their vows.
What feast was it? The Feast of the Exaltation of the Holy Cross.
I believe the pope's choice of date is significant. Currently the media is abuzz with speculation concerning the upcoming Extraordinary Synod of Bishops, particularly with regard to a push among certain cardinals to permit Holy Communion for civilly divorced-and-remarried Catholics. Much of the debate concerns the question of how much the Church should expect members of the faithful to sacrifice. This was also an issue at the time of the contraception debate during the 1960s. At that time, those favoring relaxation of doctrine argued that it was simply too difficult for Catholic couples to follow the Church's ban on artificial methods of birth control. Pope Paul VI responded with Humanae Vitae, in which he quoted Jesus' words in Matthew 7:14: "the gate is narrow and the way is hard, that leads to life."
Perhaps Francis is indicating a similar attitude to that of Paul VI by officiating at the mass wedding on the feast marking Jesus' self-sacrificial outpouring, and by making the Cross the center of his homily.