BUT the first marriages were before the conversion..
Many interpret the remarriage to be a "wife." The scripture says the elder is to be the "husband of one wife." Therefore, one who is divorced and remarried in this view has more than one wife. By that logic it doesn't matter if it was before or after conversion.
This is in conflict with 2 things as I see it.
1. The probability that the "husband of one wife" restriction actually referred to the practice of multiple marriages/polygamy.
2. The promise that we're forgiven when we become Christians and all our past sins are removed.
First, second or third conversion! ;^)