From what I understand of the Trinity, questions like this thread are wrong. Trinity is 1 God, 3 Persons = Monotheism. It is not logical and it never claims to be. God is not logical, so you cant ask logical questions like "1=3?", regarding the Trinity.
But I don't think, that the Trinity is a good concept. I mean, it was created to explain the NT, so that humans can understand Jesus, Holy Spirit & the Father. The problem is, that even with the concept of Trinity, noone understands Jesus, Holy Spirit & The Father. It doesn't solve the first problem in my opinion. People couldn't understand why Jesus is God and not God, and they created a concept, and now they can't understand why 1=3. Humanity didn't gain anything through that concept, the questions still exist. If the trinity were clearly taught in the Bible, we should accept it, even though it is not logical. But the trinity is not found in the Bible. The Bible has passages, that made us invent the trinity. As Bible believers, we should not see the trinity as absolute truth, because humans invented it out of the data in the Bible. Maybe a better concept can be invented?
One possible explanation why Jesus is God and not God is this:
Jesus is the image of the God. God's attributes are manifest in Jesus, a human can't get possibly more similar to the invisible God. (Colossians 1:15) That is why, for us humans, Jesus is God, or God on earth or the image of God or God in flesh. We can say "when we see Jesus, we see God" (That is the closest, we can come to knowing God) From God's perspective Jesus is still a created thing and not God. Because He only manifests God's attributes into the created world, without being God in essence.
That also explains, why the Bible emphasizes Jesus=God and the Quran emphasizes Jesus != God.
The Bible is written from human perspective, for us Jesus is God.
Quran is written from God's perspective, for Him Jesus is not God.
And it begs the question which aspect of Jesus' "sacrifice" forgives sins: the human aspect or the divine aspect? If it's the human aspect, that doesn't work because human sacrifices are forbidden in Judaism; and if it's the divine aspect, how can God be sacrificed for God?
Instead, I would submit it only makes sense as a symbolic theological construct.
Yes, I think so too. The reasoning behind this, is that the Bible says "punishment for sin is death". So in the christians view, God would not be just, and He would not follow his own law, if He forgave our sins. The sins would be unpunished, therefore God wouldn't be just.
So christians say, that Jesus, being perfect, had the ability, to fullfill this verse "punishment of sin is death" for all humanity. The sins are punished, and God can forgive us while being just.
The problem from my perspective, is that it is not real justice. Suppose the judge killes himself, instead of punishing the murderer. The law "punishment for murder is death" would be fullfilled, but I would not call that justice. Justice can only be applied to the sinner. Punishing someone else is not justice.
I understand that verse "Jesus died for our sins" a little bit different.
Jesus wanted to save humanity from sin, by his message, spirit or whatever. In order to fullfill his mission, he needed to die. He would not have been killed, if he didn't fullfill his mission. They would not have killed him, if he hadn't proclaimed his message. So he did, whatever he had to do in order to free us from sin, he died doing that, therefore he died for our sins.
That was an act of love. He had shown so much love for us. Regarding his life, we have to love him. And in love, we are all justified. A person in love can't sin. We are saved, because Jesus has shown us perfect love, therefore we must love him and be freed from sin.