the limits of language—is breathed out and given identity, we might say, by the Father and the Son together. This is the ultimate origin of Jesus’ teaching that God is Father. God has never not been the Father. His Son has never not been the Son. And their mutual love, the Spirit, has never begun nor ever ceased to bind them together in unbreakable communion. This mystery is part of what Jesus starts to disclose when He instructs His disciples to call God “Father.” The first words of the Lord’s Prayer,
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