How often young men and women, when choosing their companion for life, think his or her faith to be of no importance! “We love each other, and he (or she) doesn’t mind that I go to church.” And yet this stance conceals multitudinous dangers for a Christian. At fi rst all is well — the young couple is even married in church (at the insistence of the believer), and it seems a compromise has been reached. But then everyday life begins, and ever more frequently one hears, “You don’t care about anything but your church” … and fi nally reality leaves no alternative but to choose between the person and God. This brochure is the advice of a missionary priest to Christians wishing to marry. It will also be of interest to all those who wish to understand the importance of faith in the life of every person.