Bondage by blackmail.
So once someone makes a commitment to the RCC, they are its forever, eh? Nice.
Suppose someone made a satanist vow before becoming a Christian? Would you demand they remain a faithful satanist their entire lives simply because they took an oath or made a vow?
And of course, expecting the worst since it seems to be served up with regular predictability, the point is about making and breaking vows not about any comparisons between the two groups.
But I do not trust that someone will not try to make it about that to avoid answering the real question, which is, whether you would condemn someone for breaking a satanist vow or demand that they be held in bondage to that vow their entire lives? After all, a vow is a vow.
The oaths taken by Luther and his faux bride were freely given and life long, just like a marriage vow. That you call it “satanic” is simply your opinion.
What Did Luther Say About Polygamy?
Martin Luther said polygamy is permissible:
I confess that I cannot forbid a person to marry several wives, for it does not contradict the Scripture. If a man wishes to marry more than one wife he should be asked whether he is satisfied in his conscience that he may do so in accordance with the word of God. In such a case the civil authority has nothing to do in the matter. (De Wette II, 459, ibid., pp. 329-330.)
Martin Luther once advised an inhabitant of Orlamunde to take a second wife, in addition to the one then living. Luther also reluctantly approved of a bigamous marriage in the case of Landgrave Philip of Hesse, who was united to a secondary wife, Margarethe von der Saale, on March 4, 1540. Since this advice was given in a confessional, Luther refused to acknowledge his part in sanctioning the marriage.