Paul's writings are pervaded by a concern for upright, moral living. He believes that even the Gentiles should strive to follow the ethical laws of the Jewish Scriptures, especially the command of Leviticus 19:18 that one should love one's neighbor as oneself. Given Paul's teaching that salvation cannot be gained through observance of God's law, does his ethical concern represent a paradox? Finally, is there a link between Paul's apocalyptic convictions and his teachings on ethics?