1 John is a theologically rich and compact book - essential divine truths are laid out in rapid succession and are often repeated; such is the case in this passage. In only nine verses John puts forth the following doctrines: 1) The Love of God for His People 2) The Reality of the Mutual Abiding of God and the Believer 3) The Gift of the Spirit 4) The Father Sending His Son from Heaven 5) The Profusions [outpouring, extravagances] of the Love of God 6) The Necessity of Brotherly Love It is the Spirit who confirms these realities and necessities in the Christian life. Thanks be to God for such a rich feast for our minds and hearts!