There is no point. Those who do not accept the trinity only do so to support their own beliefs. You say "so long as we 'agree on truth' in Christ..." and that is problem. They do not agree and are not going to.
Most people wouldn't read a book on Christology if I gave them one. I gave one of my educated relatives a book on Christian evidences and it wasn't even donated to a library or thrift store. The answer was, "This is crazy" and it landed in the trash can without any respect to give it back to me.
How many of you can name a book on Christology? How many of you can name a book on the Trinity?
One of the things we have is the record of the Church Fathers on Jesus' Divinity. Ignatius, Mathetes, Theophilus, Justin Martyr, Athenagoras, Irenaeus, Clement of Alexandria, Tertullian, Origen and Lactantius all testified or taught that Jesus is God, Jesus is God incarnate, and some taught the Trinity.
To say that we don't believe the divinity of Jesus or the Trinity is to do what? It is to deny a very large part of Christian history which comes from the disciples of the Apostles themselves.
Then there is the record of Nicodemus coming to Jesus by night and saying:
John 3:2 The same came to Jesus by night, and said unto him, Rabbi, we know that thou art a teacher come from God: for no man can do these miracles that thou doest, except God be with him.
So if we talked about the miracles and things that Jesus did, there are some heavy miracles. If you or I did a few miracles today, what do you think the response of most people would be?
But Jesus' claims go farther because He speaks of His pre-existence:
John 8:58 Jesus said unto them, Verily, verily, I say unto you,
Before Abraham was, I am.
So how do you pre-exist and become born of a virgin just to be dismissed by a whole lot of people. You have a heavy claim and there is a heavy denial by people. If people were looking for truth, don't you think the answer would be a little different? And if it the response of people was different, wouldn't they give Jesus more weight than they do? Forget about whether they believe in the Trinity or not, their response is that they don't believe and they aren't looking for truth because if they did, they would put a higher value on Jesus than they do but they don't and they won't communicate it because they don't know how to study the Bible which is number one and number two, they make no effort to study the Bible in my experience.
So let's backtrack in the scriptures a little bit to see what God says:
Deuteronomy 13:3 "you shall not listen to the words of that prophet or that dreamer of dreams, for the LORD
your God is testing you to know whether you love the LORD your God with all your heart and with all your soul.
We have a lot of professors today and some are good and some are bad. We had an large invasion of the cults. Why is that truth isn't just handed to us? The truth is plain and clear but there are all of these diversions with everyone teaching their own way. According to Deuteronomy 13:3, God is testing you. A reason I believe is from the reason that Jesus speaks in parables (Matthew 13:5) and the reason Jesus does that is because if God made the manuscript evidence more perfect and if God made it more clear than it ever was, you could have people with no business believing getting saved from hell and going into eternity not ever changing. Why did Adam and Eve have to die instead of live forever in a fallen state? If God wanted them saved, why did they have to die right then and there? The answer is that God doesn't want people to live in a fallen state so that is why they have to die and if they don't change, believe in who God is, etc., then why should God let them live in a fallen state and give them salvation from hell? You already have a generation of Jews who saw the miracles and didn't enter into the promised land so seeing isn't enough to believe God and follow God because we're dead spiritually.
Deuteronomy 18:18 I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him.
Deuteronomy 18:19 And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.
And we have the prophet like unto Moses. Whether you listen to Jesus or whether you don't listen to Jesus, God will require it of you and God is testing you.
You all have to do better than this because you can give God lip service but the weight that you all give Jesus is unbelief.
Exodus 3:13 ¶ And Moses said unto God, Behold,
when I come unto the children of Israel, and shall say unto them, The God of your fathers hath sent me unto you; and they shall say to me, What is his name? what shall I say unto them?
Exodus 3:14 And God said unto Moses, I AM THAT I AM: and he said,
Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.
John 8:57 Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham?
John 8:58 Jesus said unto them, Verily, verily, I say unto you,
Before Abraham was, I am.
John 8:24 I said therefore unto you, that ye shall die in your sins: for
if ye believe not that I am He, ye shall die in your sins.
What do you say to Moses when you ask, "What is His name?" Moses says, "I AM hath sent me unto you." Do you believe the testimony about God's name?
"For in Him dwells the fullness of the Godhead bodily;" Colossians 2:9
What does it mean to have the Godhead in Jesus bodily? It means that He was and is God so for people to claim that Jesus and the Father are not one is to deny everything in the Bible and to have no comprehension at all.
John 10:31 ¶ Then the Jews took up stones again to stone him.
John 10:32 Jesus answered them, Many good works have I shewed you from my Father; for which of those works do ye stone me?
John 10:33 The Jews answered him, saying,
For a good work we stone thee not; but for blasphemy; and because that thou, being a man, makest thyself God.
They accused Jesus of making Himself God because Jesus did all the works that only God could do and because of that they crucified Jesus.
