76 And child, you will be called a prophet of the Most High, for you will go before the Lord to prepare His ways, 77 to give His people knowledge of salvation through the forgiveness of their sins.
A lot of preachers today preach a false gospel. They add sugar to it to make it sweet and palatable to the unsuspecting victim. That gospel is poisonous which is masked with sugar so you won’t taste the poison and die spiritually. If you do not preach about sin, the person cannot be convicted of it and be open to Jesus Christ. The false preacher tells you a false gospel that cannot save you and makes you think that you are going to heaven and you’re not. Jesus sent John to tell the people of Israel to repent and get right with God because unknown to the people God was coming in human form and without repentance you cannot open the door of your heart to Jesus.