Luke 17:17

Jesus said to His disciples, “Stumbling blocks (temptations and traps set to lure one to sin) are sure to come, but woe (judgement is coming) to him through who they come.  

Jesus instructs us about the stumbling blocks put in our way. False doctrine, teaching, and watering down the Gospel lead believers to sin. Even worse is the judgment that comes to those who do not teach the Bible accurately, which is why a wise believer reads and knows the truth.