“Without Sin?” Video
Pelagianism, also called Pelagian heresy, a 5th-century Christian heresy taught by Pelagius and his followers that stressed the essential goodness of human nature and the freedom of the human will. Pelagius was concerned about the slack moral standards among Christians, and he hoped to improve their conduct by his teachings. Rejecting the arguments of those who claimed that they sinned because of human weakness, he insisted that God made human beings free to choose between good and evil and that sin is a voluntary act committed by a person against God’s law.
From: Encyclopedia Britannica
- If we walk in the Spirit, only then we do not fulfill the lust of the flesh.
Lightship Ministries 
I never heard of a sheep or any other animal being born astray, that is a ridiculous analogy, to try and prove a point.
Like I said; Death (separation) includes the whole package: Body, Soul, and Spirit. You cannot justify yourself, or a lie, by simply attempting to throw scripture verses, at spiritual darkness and death. Death is the result of sin (to all) brother and that include separation of our human spirits, soul and physical bodies. Why you cherry pick at only the flesh (body) is not acknowledging the need to regenerate the tripartite being.
You must be crucified in Christ alone, regenerated and transformed into a new being.
[Titus 1:13 – This testimony is true. For which cause reprove them sharply, that they may be sound in the faith] [Matthew 10:34 Think not that I am come to send peace on earth: I came not to send peace, but a sword.]