INTRODUCTION
Centring primarily or exclusively on God can be harmful because it risks overshadowing natural self-love, human relationships, and the authentic value of other people. When all actions are measured solely by their service to God, people become instruments of divine duty rather than ends in themselves, and moral reasoning is subordinated to obedience. Promoting this to others can pressure them into a form of devotion that is neither voluntary nor genuine, encouraging fear or duty in place of authentic love. True ethical life requires recognizing the independent worth of ourselves and others, not reducing all human relationships to a means of serving God.
Harm comes if God is seen as truly good.
But it is much darker than that usually.
Nobody knows God personally - theology no matter how basic comes from human opinion.
Nobody can prove that morality depends on God.
Most theologies in fact try to condone evil in the name of God. Eg Jesus' made Moses a hero despite or because of his twisted rites and genocidal behaviour.
Much faith looks like a mask for contrarianism or tradition.
THE ARGUMENT
God roughly means the supernatural being that is entitled to your concern and your love.
Does this mean that God should be good or believed to be good? It means He should be believed to be good more than anything else. It is supposedly good to love God alone and to love our neighbour just for Him.
There is greater heroism in loving a God that is evil than one that is good - in the sense that it is really about helping him and seeking nothing back.
The teaching that loving God takes priority sends a message to the severely depressed. Even if you don't want it sent, it is being sent. It is this, "It is more important that you try to love God than that you get better." Indeed, the Christian should explicitly say that if they really believe in loving God primarily or totally. The Christian then cannot agree with the atheist who will state, "One thing a depressed person does not need to hear is that their getting better is not of supreme importance to God or believers." They will rebel against the knowledge and instinct that the atheist is right.
The Christians are in no position to complain if atheists blaspheme God. And the atheists cannot intend to blaspheme God, for they don't believe in Him. What they mock is the idea of God. The Christians need to stop criticising unbelievers as blasphemers.
Christianity makes such serious, and possibly dangerous, and shamelessly dangerous claims that every believer would need to be an expert in philosophy and theology to justify believing in those claims.
The Ten Commandments worryingly teach that we must be motivated to help others for God's sake and not their own.
The first commandment says God is the Lord and there must be no other god worshipped besides Him. The commandment does not say there are no other gods. It says only that no other god must be worshipped. Worship means to declare the worth of. To worship God alone means you consider nothing worthy or valuable but Him.
The second commandment says that the people must not bow down before images. It is said that this commandment is not a ban on worshipping other gods because the first commandment already dealt with that. It is merely saying that images must not be used in the worship of God. The images are not worshipped as God (how can they be?) but are used to help people worship God. The message is that we must not confuse anything human with God or let it limit or determine our view of God. This is another way of asserting that we value God, not what is human.
The better we love God, the more we should become like Him. If you admire somebody's character, that is the starting point for becoming like them in your own character. But God is not like us. He is not a human being. Even if God has become man, it follows that He is still the same God who is not like us. His becoming man has not changed Him—He has only taken on an additional nature.
Theology no matter how basic is still a man's idea - man has a bad side. That DNA is in the theology. Do not harm yourself by loving that God too much!
Also, what use is such an example? We cannot become like a God who is not like us. Trying to take Him as a role model only means we hinder the development of our own character.
God cannot be central or important unless he is linked to morality. He supports it and represents it. Or does he?
It is said that because we would not be here without Him making us, that we should reward him by doing what he wants. That is linked to justice.
Some go as far as to say that murder is only wrong for He says so. The Bible is proof that obeying commands from God just because He says so is just cruel and evil. Jesus even refused to take the chance of saying God was evil for saying adulteresses need to be stoned. I repeat, I am saying need, not deserve, though the Bible certainly thinks they need and deserve it.
Many reject the notion, "Whatever God commands is good even if it does untold harm - kills babies." What use are they? Nobody obeying the law - even a cruel one - will often examine the rationale for it. Commands are meant to be short-cuts - nothing gets done if people investigate first.
The central position of God makes Christianity a harmful system.