These are thematic, John, to your point, thematic, John MacArthur's slave, John MacArthur does a deep dive into what Paul was talking about when he starts off most of his books, epistles, and he says, I'm a slave to Jesus, I'm a servant to Jesus, I'm this and that, and the actual point of it, and he took a lot of criticism for this, but I would recommend this book very highly for people to read, is that our relationship with Jesus Christ, he bought us with a price, that means that we are his, literally, slave, into that, and it takes the whole context outside of ourselves into what Jesus is expecting from us, and it's a very, very important book, very timely, again, like I said, John MacArthur was really critical about what's happening in churches today, and he was criticized for this.