Reporting someone on twitter?

[adshim2]

There is this person that I follow on twitter. I started following this person because his profile said he tweeted about Christian things, which I was interested in because I am a Christian. But after I started following him I noticed he is always posting these weird tweets about how he needs help with his mind, that people on twitter and the world make him mad, if there are any demons on twitter, that the world is going to feel his wrath. At times he does post Christian things, but overall I can't help but feel that this man is not well. I have never spoken to him or sent him direct messages or anything. He does not know who I am. I keep wondering, what if he causes harm to someone? Should I report him? Also, I want to stop following him, is there a way to do this without him realizing it? He is always making comments about other people who have stopped following him and I am afraid he might start picking on me.