Here Paul expresses again his dualism, his view that reality consists of two opposing modes. Just as the "letter of the Law" is dead while the "spirit of the Law" is alive, so the "flesh" is dead while the "spirit" is alive. There are important consequences of this dichotomy for developing ideas about the Jews. Jews who observe the "Old Law" only [I'm leaving the possibility open that Christian Jews might observe both Old and New Laws] are, according to the passage above, controlled by the flesh not by the spirit. This association of the Jews' rejection of the New Law (spirit) implies their stubborn, continuing preoccupation with fleshly desires, leaving Jews open to a stereotype of lascivious, greedy, overly sensual beings.