law and repentance
Regarding marriages, in the Roman Catholic Church, full of laws as you can imagine, there is no divorce, but there is annulment if one of the partners behaved in an irregular way - cruelty, adultery etc. Therefore, another marriage is allowed. If the marriage partners are married before one or both apratners are in the Church, and there has yet to be Church annulment of a previous marriage, then that couple must live in celibacy until the matter is decided by a Church Tribunal.... Uff!
Little wonder that Christ said, "I do not condemn you, go and sin no more!" It is simpler and says so much. The choice is always: do we want to live according to God's Law or our short-term wants.