Alice was an elderly friend of mine who is now with the Lord. For years she struggled with the Trinity and the more we talked about the Trinity, the more concerned I was about her faith, because she kept arguing that God could not be three-in-one. And yet, she continued to affirm that she is indeed a Christian.
Alice thought it was just some Christian mumbo-jumbo and it didn’t really matter if you understood it or not. Eventually, I gave her the warning, “Alice, if you deny the Trinity, you cannot be a Christian. You either believe in the Trinity and you’re a Christian, or you deny the Trinity and set yourself outside the lines of Christianity.”
A few months later, she came to me after church smiling, and said, “I finally get it. 1+1+1=1.” I was overjoyed. So was she, and she thanked me for being so direct about the seriousness of our discussion.
The Trinity really is that important. All Christian theology is an explanation of the Trinity. You cannot understand Christianity without a basic understanding of the Trinity. The following is intended to present what you need for a basic and foundational understanding of the Trinity. If you study and learn this, it will serve you well.