This World Quotes (page 22)
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Individually the disciple and friend of Jesus who has learned to work shoulder to shoulder with his or her Lord stands in this world as a point of contact between heaven and earth, a kind of Jacob’s ladder by which the angels of God may ascend from and descend into human life. Thus the disciple stands as an envoy or a receiver by which the kingdom of God is conveyed into every quarter of human affairs.
Dallas Willard
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