Matthew 23:18

18 You also say to people, “You may make a promise by the altar in the temple. Then it is not a serious promise. You do not have to do it. But you may also make a promise by the gifts on that altar. Then it is a serious promise and you must do it.”

23:16The teachers of God's Law and the Pharisees were like blind people. They did not know the truth about God. They could not see God's way, but they were trying to show other people the right way to go.