What is it that makes person valuable? What gives them dignity?
In our society it seems like a person's value is "measured according to their revenue-earning capacity." (Refer to 'When disability discrimination is legal')
So what then of those whose revenue-earning capacity is diminished in some way for example, through disease or disability? They simply become a "financial burden" on society.
If we hold a view like this, then whole raft of other decisions and actions may follow. Here is an example of people being excluded from entering Australia, but what next? Abortion of embryos that may have a disability? Involuntary euthanasia of those who are 'burden' on limited resources? These consequences are alarming, but they are the natural end point of the way that our society is thinking at the moment.
In contrast, the Christian narrative offers an alternative (and I think compelling) source of human value. We have been created by God in his image. This gives us tremendous value and dignity. Furthermore, God loves us so much that He sent Jesus to rescue us from our wayward lives, restore us to relationship with God and make us part of his new community. That is amazing value. That is amazing dignity, given to us by the supreme creator of the universe. We aren't precious because of what we can do for God. We simply are precious to Him. Fullstop.
