>>17788046
Don't worry, it's fine.

When we say the Father, Son, and Holy Spirit aren’t “parts” of God, we mean that the divine nature isn’t divided up. Each Person possesses the fullness of the divine essence. The Son isn’t 1/3 of God. He is fully God, just as the Father and the Spirit are.

Think of it this way: God’s essence is simple, not composite. He’s not built out of pieces like Legos. So if He’s going to have three persons, those persons can’t be like parts of a whole. They have to be full expressions of the whole. That’s why the Trinity isn’t like a three-headed god, and it’s also why it’s not modalism. Each Person is distinct, but they are what the other is, in terms of nature. Which means that:
>not parts, because God is indivisible
>not duplicates, because there’s only one divine essence
>not masks, because the persons are really distinct
>not three gods, because they share the same will, power, and act

It’s metaphysically thick, but not incoherent. Let me know if you're still lost.