When was the idea of all humans worth equal incorporated into Lutheran Christianity?

### Why am I here In Swedish Lutheran church today (which I belong to), it seems to be "obvious" that *All humans are worth equal*. I'm not questioning the statement itself, I am just interested in the origins of it - when did the Church started to state this? ### What does the UN say? The [United Nations universal declarations of human rights](http://www.un.org/en/documents/udhr/#atop) state: > All human beings are born free and equal in dignity and rights. They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood. This sounds like "all humans are worth equal" to me. ### What does the bible say? Genesis 1:27 > So God created mankind in his own image, in the image of God he created them; male and female he created them. Nahum 1:14 > The Lord has given commandment about you: “No more shall your name be perpetuated; from the house of your gods I will cut off the carved image and the metal image. I will make your grave, for you are vile.” I haven't been able to find any place in the bible where it says that All humans are worth equal. Being created in the image of God does not automatically lead to *All* humans being worth *equal*. The text from Nahum more seems to say the contrary (there are some other texts just like it). ### Question I have heard "All humans are worth equal" being spoken about as a *Christian idea*. I'm not interested in the origin itself of the concept of all Humans being worth equal, I want to know **When was this idea incorporated into Christianity?**