Law and gospel, they go together. That's a helpful summary that I've found in teaching. It's not just law with no gospels. Not like, well, because that leads you to moralism, despair, condemnation. Some people think, oh, well, I guess we just need to do some law here or it's just gospel. The problem with that way of talking is that that's not the gospel. God accepts you on account of the bloodshed for you on a cross because of your sin needed to be paid for. If you don't preach the law in gospel, you don't preaching the one true God.