More than a doctrine

The Father and his Son Jesus are people, and so the Spirit is best understood as a person too. Later Christian thinkers pulled these revelations about God together into an all-important position or “doctrine” we know as the Trinity. God is one, but made up of three persons: the Father, the Son, and the Holy Spirit. This claim stands at the heart of the confessions that all Christians recite, confess, and affirm to the present day. But we know from Paul’s conversion near Damascus that this is not just a definitive account of who God is. It is a definitive account of how we know God, indicating that this knowledge does not rest on our own efforts or insights, which is just as well. As Job said some time ago, where would we go to find God (Job 23:3, 8-9; see also 28:12-22)? The creeds affirm that God reveals the truth about God, reaching all the way down to us in our humanity in Jesus, and to our hearts and minds with his Spirit. This might seem obvious, but it is incredibly important. We must remember with crystal clarity that God is in charge of how we know about God, and of the definition of what God is really like, and we must hang on to these truths through life and death.—Paul: An Apostle’s Journey, 18–19

<idle musing>
Not sure I would have started the paragraph the way he did. Yes, they are persona, but people has a connotation of human/mortal that I would rather avoid in the definition of God. But here we run into the problem of the inadequacy of finite words to define the infiniteness that is God. Which basically is what he is saying, too.
</idle musing>