'In Sin' in the Bible

And ye which were dead in sin through the uncircumcision of your flesh, hath he quickened with him and hath forgiven us all our trespasses

So put to death and deprive of power the evil longings of your earthly body [with its sensual, self-centered instincts] immorality, impurity, sinful passion, evil desire, and greed, which is [a kind of] idolatry [because it replaces your devotion to God].

Servants, obey in all things your masters according to the flesh; not with eyeservice, as menpleasers; but in singleness of heart, fearing God: