The fool says, there is no God.

DC:

Provide the verse that says specifically that John or Paul or Timothy or any number of folks sinned. It's all covered right here, including Mary:

Romans 3:22-24
King James Version (KJV)
²² Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:
²³ For all have sinned, and come short of the glory of God;
²⁴ Being justified freely by his grace through the redemption that is in Christ Jesus:

I don't see any exception clause for Mary and none is needed for God in the flesh, Jesus Christ.

Then you're making God into a liar. Because that verse is inspired by the Holy Spirit. Now, tell me, what sin have those billions and billions of children who died in the womb committed? What sin have those children who died before their first birthday committed? None. Therefore, not all have sinned.

Again, that is a reference to the unbelievers. If you ever attempted to correlate Scripture, you would know:

Psalm 14:1
The fool hath said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that doeth good.

Is Mary sinless? 

Yes, Mary is sinless.

Sincerely,

De Maria