'Flesh' in the Bible

For, from the coming up of the sun till its going down, my name is great among the Gentiles; and in every place the smell of burning flesh is offered to my name, and a clean offering: for my name is great among the Gentiles, says the Lord of armies.

But not one has done so who has a remnant of the Spirit. And what did that one do while seeking a godly offspring? Take heed then to your spirit, and let no one deal treacherously against the wife of your youth.