HMMMMMM. I think what you have "learned" is wrong, or rather brainwashed into believing. Only catholics believe in this nonsense, because it was they who instituted the sacrament of "holy matrimony."
Back in "biblical" days "man" needed a way to control his women, to insure they would not leave him or disobey him. Hence the priests derived a rite to make the woman the possession of the man, to care for him and serve him, and have children for him to work his land and carry on his legacy. Women had no rights, they were servants to the man that owned them. Men could also have concubines to bear them children or satisfy their sexual needs should their wife not be able to perform these "duties."
However should a women turn to another man for the same needs, she was labled an adulterous women and punished severly or put to death for her actions!
As Skitch stated there is no reference to marriage in the bible as far as god instituting this ceremony. This was an act perpetrated BY "man" for the purpose of "man's" own benefit to control women and keep them enslaved to him.
This is a law created by the catholics passed down through the generations and adopted by the other religious sects and pounded into gullible brains for centuries.
The only hell anyone divorced is going to suffer is the unnecessary guilt they feel for believing such nonsense!