Even now the ax is ready to strike the root of the trees! Therefore every tree that doesn't produce good fruit will be cut down and thrown into the fire.
"I baptize you with water for repentance, but the One who is coming after me is more powerful than I. I am not worthy to take off His sandals. He Himself will baptize you with the Holy Spirit and fire.
References for Matthew 3:11
His winnowing shovel is in His hand, and He will clear His threshing floor and gather His wheat into the barn. But the chaff He will burn up with fire that never goes out."
References for Matthew 3:12