This phrase ( I Cor. 15:50) occurs in Paul’s letter to the Corinthians, and it has led to a wide level of speculation. But the more common reading is to be preferred. By “flesh and blood” Paul is simply referring to the ordinary, corruptible, and weak. In fact, Paul equates this phrase with perishable on the next line (a rare use of parallelism in Paul’s writing). Paul is saying that flesh and blood are not fit to inherit the kingdom, because our present bodies need to be transformed and glorified before entering eternity.