No where does Scriptures state or imply that we a born sinners.
Marcia, as believers, it does absolutely no good to misrepresent the views of another. You are only half correct in what you say concerning Pelagius as I understand his views. If you are implying, as it would clearly seem, that he believed a moral being could be ‘born righteous’ it would be nothing short of a clear misrepresentation of the views of Pelagius. To say that children are born neither righteous nor sinful is not heresy but in accordance to reason, Scripture, and any similitude of justice.
We are born with a sin nature or, if you prefer, a fallen nature; this is why we need to be redeemed. If this were not true, babies would not die since death is a result of the first sin and was passed on to all. Physical and spiritual death are the result of the first sin.
I think the whole of scripture supports this, especially Gen. 3,Rom. 5 and 8, and 1 Cor. 15.
Gen 3 shows us physical death as the result of sin (which is referred to in Rom. 5):
"For you are dust,
And to dust you shall return."
Adam hid from God - this was spiritual death right away because he was afraid of God and had to hide - the relationship and closeness with God was broken. Adam and Eve were covered with the skin of an animal (to cover their nakedness, which was no longer innocent - they had forfeited innocence for the guilt of sin) and cast out of the Garden. This casting out was the result of and evidence of their spiritual death - separation from God.