N. T. Wright has called attention to the uncanny resemblance between Yahweh and Jesus. Jesus mourns, grieves, and laments, and so does Yahweh (Gen. 6:5–6; Jer. 48:36–39). Jesus turns his ferocious wrath against hypocrites and bullies, and so does Yahweh (Ps. 50:16–21). Jesus pities the broken, including those who have broken themselves by their own rebellion; compassion is Yahweh’s Name (Ex. 34:6). Jesus lays down his life for his friends, and the heart of Yahweh’s covenant with Israel is the promise of self-gift: I will be your God, the God who delivers Israel from Egypt and helps his anointed (Isa. 43:1–3).
Much of what we might think is the “form of a servant” actually shows Jesus in the “form of God.” As Wright says, to say that Jesus is God is to make a remarkable claim about Jesus. It is also to make an astonishing claim about God. Jesus shows what kind of God God is.
And that helps us answer questions about Triune “personhood.” If we see the Father (not the ineffable divine nature) when we see Jesus, then the Father must be the kind of being for whom we could draw up a character sketch, with likes and dislikes, the kind of God who responds with outrage at injustice, pity at suffering, and saving action for the distressed. If we see the Father when we see Jesus, the Father is a person in the personalist sense of the word.