The divine life is the eternal activity of the Father who as the fountain of deity generates the Son to share in his own divinity. The self-giving of the Father for the Son, in turn, is reciprocated in the Son’s self-giving for the Father. This relationship between the Father and the Son comes forth as the third Trinitarian member, the Holy Spirit. Because he is the Spirit of the Father and the Son, the Spirit of love, the Spirit is the essence of the triune God.