Holy spirit and fire

I baptise you with water so that you'll give up your sin. But someone more powerfull is going to come, and I'm not good enough even to carry  his sandals. He'll baptise you with the holy Spirit and with fire. His threshing fork is in His hand and He is ready to separate the wheat from the husks. He'll store the wheat in barn and burn the husks in a fire  thet never goes out.