The apostle's phrase "in my flesh," as may be seen by tracing it through the New Testament, means "in me by nature." He was saying, "There is nothing in me naturally good." But before proceeding further let us seek to carefully define what is signified by the term "the natural man," or "man by nature." It does not mean the human nature itself, or man as a tripartite being of spirit and soul and body, for then we should include the Lord Jesus Christ, who truly and really assumed human nature, becoming the Son of Man.