There is this example under the entry "sin" in the New Oxford Dictionary:
the human capacity for sin
I don't know how to understand capacity here. According to the definition of capacity in dictionary, I think it may convey one of two possible meanings:
The maximum amount of sin that human beings can tolerate.
The ability of human beings to commit sins.
I tend to prefer the latter version, but am not very sure.
P.S. I think the word human is quite worthy of attention. Does it imply something inside individual humanity?