1 John 4
The command to test the spirits rather than believing every spirit that claims prophetic authority distinguishes genuine revelation from satanic deception: the true Spirit confesses that Jesus Christ has come in the flesh, identifying the incarnation as the litmus test of authentic Christianity. The one in the community who abides in Christ is greater than the one in the world—Satan and his agents—establishing that believers possess greater spiritual power through their participation in Christ than the forces arrayed against them. God is love is the definitive statement of God's nature, repeated twice for emphasis, meaning that love is not merely one of God's attributes but the very essence of his being and operation. God sent his only Son into the world not to condemn but to save, and Christ became the propitiation for our sins, bearing the judgment that sinners deserve and opening the way for reconciliation. The love God has shown in sending his Son calls for a responsive love from believers that overflows toward others. The love we have for God must overflow into love for our brothers and sisters, for whoever says I love God but hates his brother is a liar and the truth does not dwell in him—love of the invisible God finds its verification in the visible love of brothers and sisters.