You can click on the footnotes to see the Bible proof texts in the bottom window of the page:
http://www.reformed.org/documents/wcf_with_proofs/ch_XXIV.html
Most Presbyterian denominations, especially the big ones, no longer subscribe to the Westminster Confession of Faith 1646, but they should.
The solidly Reformed denominations that still hold to the WCF 1646 hold that the Biblical reasons for divorce are the same as the Bible says, adultery, or desertion as can not be remedied by the either the Church or Civil Courts, and that they ARE Biblically just causes for divorce.
The innocent party remains within the Church, the offending party would obviously be subject to Church discipline.
Known adulterers or those who abandon their families are to be cast out from the congration, thus “turning them over to God”, as if they were dead. Thus the innocent party would then normally remarry, the same as if their spouse had physically died, since the normal Biblical pattern for Christians is to marry and raise children. Of course, if an innocent spouse is on the older side and already has children, they frequently may choose to not marry again, which is certainly Biblically acceptable as long as they can refrain from lust and fornication and other related sinful behaviors of the wordly that the Bible tells us to refrain from.
If the guilty party then subsequently REPENTS (which would include turning away from the sin of adultery or abandonment as the case may be), Lord willing they will find a solidly Reformed congregation where they can enter into fellowship.
Any solidly Reformed church they approach will of course use due diligence in determining if the person truly has repented before admitting them as a member; lying, of course, would signify a lack of repentance.
Thank you. Your post was very interesting and helpful. It is always nice to learn something new,