13. What is meant here? With Paul, knowledge signifies discretion, understanding, reason. He speaks of the Jews (Rom 10, 2) as having "a zeal for God, but not according to knowledge"; that is, a zeal without reason, without understanding, without discretion. His message here, then, is: "We should conduct ourselves in Christian affairs with becoming reason and moderation lest we give offense to the weak by a presumptuous use of Christian liberty. Rather we should, with discretion and understanding, adapt ourselves to that which promotes the neighbor's welfare. Likewise, when we labor, fast, or when we regulate our sexual relations, we are to exercise reason, lest the body should be injured by too much fasting, watching and toil, and also by needless abstention from sexual intercourse. Let everyone take heed to remain within bounds by using reason and discretion. The apostle counsels the married (1 Cor 7, 5) not to defraud each other too long, lest they be tempted. In all such matters, he would impose no measures and rules, no limits and laws, after the manner of the councils, the popes and the monks. He leaves it wholly to each individual's discretion to decide and to test for himself all questions of time and quantity bearing upon the restraints of his flesh. "In longsuffering, in kindness." 14. The meaning of these phrases has been stated in many other places, particularly in connection with Romans 2 and Galatians 5. "By the Holy Spirit." 15. What are we to understand here? The words may have one of two meanings: First, the apostle may have reference to the Holy Spirit in person, who is God. Second, he may have reference to the spirit of individuals, or their spiritual condition. "Holy Spirit" may be intended to stand for "spirituality," Paul's meaning being: "Beware of the professedly spiritual, or of things glittering and purporting to be spiritual; beware of them who make great boast of the Spirit and nevertheless betray only a false, unclean, unholy spirit, productive of sects and discord. Abide ye in that true, holy spirituality proceeding from God's Holy Spirit, who imparts unity and harmony, determination and courage." As Paul expresses it elsewhere (Eph 4, 3), "Giving diligence to keep the unity of the Spirit in the bond of peace." They, then, who continue in one faith, one mind and disposition, give testimony by the reality and saintliness of their spiritual life and by the presence of the Holy Spirit that they are servants of God. For true spirituality, or a holy walk in the Spirit, means to be in heart and mind at one with the Spirit, through faith. "In love unfeigned, in the word of truth." 16. As the apostle opposes the Holy Spirit to false sects and false prophets, so he opposes unfeigned love to indolent Christians who in true faith and unity of mind possess marks of true spirituality, but are nevertheless indolent, cold, in fact false as regards love.