“By pureness, by knowledge, by longsuffering, by kindness, by the Holy Ghost, by love unfeigned,”
King James Version (KJV)
6:6 By prudence - Spiritual divine; not what the world terms so. Worldly prudence is the practical use of worldly wisdom: divine prudence is the due exercise of grace, making spiritual understanding go as far as possible. By love unfeigned - The chief fruit of the Spirit.
2Co 6:6 2Co 6:4,5 show what Paul suffered at the hands of men. He now tells his manner of life under such persecution. By pureness. Living a holy life. Chaste. By knowledge. His knowledge goes hand in hand with purity of life. By the Holy Ghost. Showing forth the Spirit's influence and power.