In Roman Catholic teaching, marriage has two objectives: the good of the spouses themselves, and the procreation and education of children (1983 code of canon law, c.1055; 1994 catechism, par.2363). Hence "entering marriage with the intention of never having children is a grave wrong and more than likely grounds for an annulment." It is normal procedure for a priest to ask the prospective bride and groom about their plans to have children before officiating at their wedding. The Roman Catholic Church may refuse to marry anyone unwilling to have children, since procreation by "the marriage act" is a fundamental part of marriage. Thus usage of any form of contraception, in vitro fertilization, or birth control besides Natural Family Planning is a grave offense against the sanctity of marriage and ultimately against God.