Why was it important for king to include biblical references

Okay so in the south in the past, not so much anymore, people were extremely religious. For most african american people, and other slaves, God was their only hope at freedom. For Martin Luther King to include biblical references is like a teacher including a football reference in class to gain respect and followers from all the people listening. It gained hope from all slaves. i dont know if this helps, and you may want to expand a bit more if you understand what i am trying to say.
 

Well, I believe what you should do is find the reasons which Elizabeth Cady Stanton uses to fight for equal rights for women in her work. Jefferson also wanted to fight for some kind of equality - he wanted America to be completely free of Britain and equal to it, so we are dealing with two people who are fighting for equality. I believe you just need to see which grounds they are using to present their cases and how they compare.