On Calvin's commentary on Ephesians 4:22-24 he made this comment: "In two persons, Adam and Christ, he describes to us what may be called two natures. As we are first born of Adam, the depravity of nature which we derive from him is called the Old man; and as we are born again in Christ, the amendment of this sinful nature is called the New man. In a word, he who desires to put of the old man must renounce his nature. To suppose that the word Old and New contain an allusion to the Old and New Testaments, is exceedingly unphilosophical." What did Calvin mean by this criticism in bold? He clearly has some school of interpretation in mind but does not name them, and just dismisses them with this passing judgment. I don't disagree with the position he states. I'm just curious what he meant by the term. Does unphilosophical mean unreasonable? Illogical? Irrational? Or is he criticizing it as an irrational or unfeasible exegesis? He doesn't elaborate on the criticism and moves on to the next subject after this quote. I'm just curious what you all think.