Answer:
Squeeze me and I cry tears as red as flesh, but my heart is made of stone. What am I?
I may only be given but never bought. Sinners seek me but saints do not. (one word).
I am a delicious way of representing data.
I move without wings, between silken strings. I leave as you find my substance behind. What am I?
What is made of wood, but can't be sawed?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.