Justin Martyr 150 A.D: “And ‘Whosoever shall marry her that is divorced from another husband, committeth adultery.’ and, ‘There are some who have been made eunuchs of men, and some who were born eunuchs, and some who have made themselves eunuchs for the kingdom of heaven’s sake; but all cannot receive this saying.’ So that all who, by human law, are twice married, are in the eye of our Master sinners, and those who look upon a woman to lust after her.”
Athenagoras the Athenian 177 AD wrote A plea for the Christians. In it he writes: “For we bestow our attention, not on the study of words, but on the exhibition and teaching of action, - that a person should either remain as he was born, or be content with one marriage; for a second marriage is only a specious adultery. ‘For whosoever puts away his wife,’ says He, ‘and marries another, commits adultery’; not permitting a man to send her away whose virginity he has brought to an end, nor to marry again.” .
Clement of Alexandria 194 AD on the exception clause states that the only exception for divorce is for remarried couples to end their sinful marriage: “Now that the Scripture counsels marriage, and allows no release from the union, is expressly contained in the law, ‘Thou shalt not put away thy wife, except for the cause of fornication;’ and it regards as fornication, the marriage of those separated while the other is alive.”
Tertullian had much to say agreeing with the above then of course came Augustines work.
There is no “re-marriage” in Scripture. Very much the opposite and in several areas of the NT.
1- Corinthians 7-27- Are you pledged to a woman? Do not seek to be released. Are you free from such a commitment? Do not look for a wife.
Luke 16:18- Whosoever puts away his wife, and marries another, commits adultery: and whosoever marries her that is put away from her husband commits adultery.
Matthew 19:5-6 “And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?”
“So they are no longer two, but one flesh. What therefore God has joined together, let no man separate.”
“The Eastern churches, under the influence of imperial legislation, were more lenient. They generally permitted divorce and remarriage for adultery and other serious offenses. For a while during the early Middle Ages, a few church councils in the West began allowing remarriage after adultery or lengthy separations.”
past Aquinas period enters …
“Augustine’s position, however, eventually carried the day in the West, and a medieval consensus on marital sacramentality and indissolubility developed, receiving Thomas Aquinas’s stamp of approval in the thirteenth century. During the same period, a very limited alternative to divorce developed This was the procedure of… “annulment,”… the official pronouncement that a marriage bond never existed, despite outward appearances to the contrary.”
“Augustine was the first theologian to call Christian marriage a sacrament, or means of grace. He based his argument in part on the use of the Latin word sacramentum for the Greek word mysterion in Ephesians 5. He opposed those who wanted to allow marriage of the innocent party in cases of adultery and made the indissolubility of Christian marriage, even after adultery, the standard of the Western church.”
christianitytoday.com/ct/2000/augustweb-only/46.0c.html
newadvent.org/fathers/15071.htm