'Flesh' in the Bible

Among these [unbelievers] we all once lived in the passions of our flesh [our behavior governed by the sinful self], indulging the desires of human nature [without the Holy Spirit] and [the impulses] of the [sinful] mind. We were, by nature, children [under the sentence] of [God’s] wrath, just like the rest [of mankind].

Therefore, remember that at one time you Gentiles by birth, who are called “Uncircumcision” by those who called themselves “Circumcision,” [itself a mere mark] which is made in the flesh by human hands—

by abolishing in His [own crucified] flesh the hostility caused by the Law with its commandments contained in ordinances [which He satisfied]; so that in Himself He might make the two into one new man, thereby establishing peace.

For no one ever hated his own body, but [instead] he nourishes and protects and cherishes it, just as Christ does the church,

For this reason a man shall leave his father and his mother and shall be joined [and be faithfully devoted] to his wife, and the two shall become one flesh.

For our struggle is not against flesh and blood [contending only with physical opponents], but against the rulers, against the powers, against the world forces of this [present] darkness, against the spiritual forces of wickedness in the heavenly (supernatural) places.