We discuss St Thomas' "proof from contingency" for God's existence. Many things exist which do not have to exist (they are "contingent"), and these must be caused to exist. Ultimately, this lead us to conclude that God must exist not as contingent being but as necessary existence. And this good God hold all things in existence, at all times.
An analogy for the Trinity is found in the human soul which can both know and love. God knows himself, and the Father begets the Son; God loves himself, and the Father and Son breathe forth the Holy Spirit.
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