Precisely.
C.S. Lewis talked about in this in his book “Mere Christianity”
“I am the way, the truth and the life.”
“I am the resurrection and the life. Whoever believes in me, though may die, he shall live.”
And many other things like this.
If you claim all that, either you are a lunatic, or an evil man. Or you are truly who you claim you are.
For you cannot be mortal AND good, and still claim all that. Either a lunatic or an evil man would be, if mortal man you were.