So God does not have the power to choose one to be born without sin?
Or is it that He can choose to create us without sin, but only on an all-or-none basis?
Are you saying God needed Jesus' sacrifice to redeem us? He didn't have the power to redeem us by whatever method He chose?
Whither God's omnipotence?
No, He didn’t, as He gave Adam free will and Adam chose to sin.
God won’t violate His own precepts. Adam sinned, and we are his progeny, all sinners needing salvation, even Mary.
Ed