Why did God choose Mary and Joseph?

Interviewer: Why did You choose Mary and Joseph to be Jesus’ parents on earth?
God: Mary was a special girl in many ways, but in her role as Jesus’ earthly mother, she is not just an individual.-She is a representative of humanity. She was a wonderful mother to Him, but she was not so extraordinary. She was a typical woman, as Joseph was a typical man. Part of Jesus’ mission was to be born and raised in a family very representative of the vast majority of other families. He was going to experience life as it was typically experienced, so that He would have firsthand knowledge of what it was like to be an average human being.
Interviewer: I think You have just preempted my next question: Why was Jesus not born to people of more standing in the world? His birth was in even more humble circumstances than His family was accustomed to.
God: Yes, that is so. That was all part of the plan. It really has been a test for humanity to see if they could believe that a man born in a stable in an obscure country-then under foreign rule-trained as a carpenter, later becoming an itinerant holy man and then executed as a criminal, would actually be God. It is a testament to the spiritual power behind this truth that people have believed that Jesus was God, not to mention that contemporary believers are numbered in the billions.
Interviewer: He certainly didn’t receive any encouragement from either the civil or religious authorities of His day.
God: He certainly did not. His fiercest critics should have been his greatest supporters.
Interviewer: You are referring to the religious Jews of the time?
God: There were some of His race that believed, but not that many. Most of them regarded Him as anathema, and it was they who brought the charges against Him. Then it was the Roman rulers, even convinced of His innocence, who nevertheless had Him executed in the most cruel fashion that they could. A lot of people have had a lot to answer for.
Interviewer: I imagine that they have. But even though some Jews opposed Him, nevertheless all His original followers were Jews.
God: Of course, and many of them were dynamos.
Interviewer: Tell me-the disciples Jesus chose-they weren’t really the most trained and educated people, were they?
God: That is the understatement of the year. You described them very delicately. Afraid that you might have to answer to some of them when you get up here?
Interviewer: Honestly, no! It is just that I am often dumbfounded at the accomplishments of the men and women who took up the torch once Jesus had gone, how they spread His teachings throughout the known world.
God: Once again it is a testament to the message even more so than to the messengers. But they were really a great bunch, once they got the fire in their bellies. It was their boldness and conviction that won people. Paul was the most zealous, and he wasn’t even around Jesus personally when He was on earth.
Interviewer: He was also the most educated and trained for the task, too.
God: In some ways, yes, but his education didn’t mean that much as far as what he did. His knowledge stood in the way of his belief for a long time, and it wasn’t till he saw the light that he was willing to accept that he was wrong. Later he was able to use his knowledge in his writing, but I would be the first to admit that you’ve got to be pretty bright to understand some of what he wrote.
Interviewer: By “saw the light” You are being quite literal here and referring to how he was blinded for a while by that brilliant light?
God: Yes. Before that, he was fanatically for the opposition, so much so that he refused to acknowledge the truth even when it was quite obvious.