If Jesus really claimed the only reason for “divorce” was fornication, why then do we have Deuteronomy 24:1-4 in our inspired cannon which allows for divorce and remarriage for reasons other than fornication?
I'm still working my way through this thread, so please forgive me if somebody else has already answered this question. Personally, I believe that Jesus answered this question here:
Mark 10:1
And he arose from thence, and cometh into the coasts of Judaea by the farther side of Jordan: and the people resort unto him again; and, as he was wont, he taught them again.
Mark 10:2
And the Pharisees came to him, and asked him, Is it lawful for a man to put away
his wife? tempting him.
Mark 10:3
And he answered and said unto them, What did Moses command you?
Mark 10:4
And they said, Moses suffered to write a bill of divorcement, and to put
her away.
Mark 10:5
And Jesus answered and said unto them, For the hardness of your heart he wrote you this precept.
Mark 10:6
But from the beginning of the creation God made them male and female.
Mark 10:7
For this cause shall a man leave his father and mother, and cleave to his wife;
Mark 10:8
And they twain shall be one flesh: so then they are no more twain, but one flesh.
Mark 10:9
What therefore God hath joined together, let not man put asunder.
When the Pharisees asked Jesus if it was lawful for a man to put away his wife, Jesus responded by asking them "What did Moses command you?" In turn, the Pharisees replied with something that Moses had written in the book of Deuteronomy, but this apparently was not the command of Moses that Jesus was looking for. The word "Deuteronomy" literally means "second law", and Jesus not only told the Pharisees that Moses, in his second giving of the law, permitted putting away solely due to the hardness of the hearts of the people he was dealing with, but he also pointed them back to what Moses originally commanded in the book of Genesis, or in the book of beginnings, because this was the proper answer to Jesus' question. In the proper answer, we find that "From the beginning of the creation God made them male and female", and "For this cause shall a man leave his father and mother, and cleave to his wife; and they twain shall be one flesh: so then they are no more twain, but one flesh." Jesus concluded the proper response by saying "What therefore God hath joined together, let not man put asunder."
Divorce was never a part of God's original design, and Moses' permission for putting away due to the hardness of certain peoples' hearts does nothing to change that reality. That's how I read it, anyway.