The question then becomes what status we should give to the acceptance of same-sex sexual relationships by some Anglican churches today.
In the words of C S Lewis, the traditional rule of the Christian Church with regard to sexual ethics has always been ‘either marriage, with complete faithfulness to your partner, or else total abstinence’[9] (marriage here means marriage between a man and a woman). This is the consensual teaching about marriage and sexual ethics that, as Vincent of Lerin puts it, has been held ‘always, everywhere and by everyone’[10] from biblical times onwards, in the same way that belief in the divinity of Christ and his bodily resurrection have been universally taught and accepted.
In the words of Darrin Belousek in his book Marriage, Scripture and the Church:
‘Scripture, consistently, presents a single picture of marriage and approves a single pattern of sexual relations: male- female union. Jesus summarizes this witness: ‘the two’ of ‘male and female’ joined into ‘one flesh.’ The Holy Spirit has woven this pattern of holy union throughout Scripture, from Genesis to Revelation, in the form, function, and figure of marriage. Tradition, East and West, also has consistently taught a single standard of sex and marriage: marriage is man-woman monogamy; all sex outside man-woman monogamy is sin. This doctrine has been taught always by the church, beginning with the apostles’ testimony to Jesus teaching; It has been proclaimed throughout the worldwide church, among all people in every place and epoch, as God’s will for sex and marriage; it has been articulated by apologetic writings and theological treatises, transmitted through baptismal catechesis and canonical discipline, celebrated in monastic vows and nuptial rites.’ [11]
Judged against this standard, the acceptance of same-sex sexual relationships (and even same-sex marriages) by some churches in the Anglican Communion has to be viewed as a ‘gross and grievous abomination,’ since it constitutes a departure from a key part of the Catholic and apostolic faith and an endorsement of sin. To put it plainly the churches involved have supported both heresy and immorality.
Furthermore, as the Church of England Evangelical Council report ‘Guarding the Deposit’ notes, the apostolic witness in the New Testament, which has also been accepted ‘everywhere at all times and by all,‘ teaches that:
‘…the Church should make a separation in this world between the people of God and those who practise sexual immorality (1 Cor 5: 1-13).
As Tom Wright notes, Paul teaches that the Church has the ‘God-given right and duty to discriminate between those who are living in the Messiah’s way and those who are not’.
Read it all.