According to Reformed Theology how can God judge us if we are born sinful? This question was asked by my Atheist friend who was raised Jewish. His point was basically that if we are all inherently sinners (Rom.3:23) than how can God hold us accountable for something we cannot control? To him it seems like &quot;the cards are stacked against us&quot; and &quot;God cannot be good if he concerns someone to hell for something they can't help&quot;
I was hoping someone here has some good verses from the Bible or quotes from some well respected theologians that might help clarify this because I couldn't think of a good answer for him other that 'God can do whatever He wants because He's God'. I told him I'd research and try to find a good answer for him. Thanks in advance for the help!
Galatians 4:7


  So you are no longer a slave, but God's child; and since you are his
  child, God has made you also an heir.


so now we need to bring the good fruit

John 15:8


  This is to my Father's glory, that you bear much fruit, showing
  yourselves to be my disciples.


We are held accountable to what we have inherited. 

1 John 3:3


  All who have this hope in him purify themselves, just as he is pure.


Simply said, If Christ could live holy life we can do it too. He was not spared from temptations. No excuses, that we are born sinful. Through the baptism we were born again in HS.