Read Part 1.
God can seem impersonal and heartless. Who has not begged God for relief, even if no more than for a few drops of water on a parched tongue, only to hear the silence of heaven? Maybe the deists are right. Maybe God wound up the clock of this world and walked away. Maybe no one answers because no one is there.
The Trinity reminds us that God is personal and loving and responsive by his very nature. Yahweh can no more become indifferent to your situation than he can deny himself, something we are told in Scripture he explicitly cannot do (2 Tim. 2:13). The Father is better than any earthly father in his attention and care. He is far more concerned about you and your suffering than the created world, which he upholds with the most delicate and detailed watchfulness (Matt. 6:25-30).