The sacrament of matrimony comes about when a man and a woman commit themselves through the exchange of marriage vows in the presence of the priest and the two witnesses in Church. Because God himself forms the bond of sacramental marriage, it is binding until the death of one of the partners. The marriage bond comes into existence only if the man and the woman enter the marriage of their own free will, without pressure from anyone and if they are not prevented from marrying by other natural or ecclesiastical ties, (for example, an existing marriage, a vow of celibacy). The marriage of a Christian couple reflects the faithful union between Jesus Christ (the bridegroom) and the Church (his bride). The hallmarks of this marriage are: faithfulness, permanence, exclusivity, and openness to new life. To arrange a wedding service, the engaged couple should contact the parish priest, telephone 028 9064 2446. This contact should be made at least six months before the wedding takes place. This is to ensure that the necessary documents are in place. These include the Baptism and Confirmation certificates, letters of freedom and the pre-nuptial enquiry forms. Couples are also expected to go on a pre-marriage course with Accord.