In the Bible, we are always commanded to watch our life and doctrine. This is primarily possible through the regular preaching of God’s word. That means, we are to be careful in appointing teachers who stand on the pulpit to preach God’s word. In this passage, Jesus teaches us how to discern false teachers and practice discernment.
God often gently convicts His people of their sinfulness and rebelliousness even when the sins of His people might seem like an insignificant sin, lest such a sin grow into fruition. But when a nation commits idolatry, God also does not withhold from punishing and rebuking them. In this passage, we learn how to avoid being in opposition or hostile to God and His ways in our daily lives.