The Young's Literal Translation may be clearer concerning the curse:
And Jesus had a lot to say about the traditions He encountered every day.
Matthew 15:1-9 Then Pharisees and scribes came to Jesus from Jerusalem and said, 2 Why do your disciples break the tradition of the elders? For they do not wash their hands when they eat. 3 He answered them, And why do you break the commandment of God for the sake of your tradition? 4 For God commanded, Honor your father and your mother, and, Whoever reviles father or mother must surely die. 5 But you say, If anyone tells his father or his mother, What you would have gained from me is given to God, 6 he need not honor his father. So for the sake of your tradition you have made void the word of God.
7 You hypocrites! Well did Isaiah prophesy of you, when he said: 8 This people honors me with their lips, but their heart is far from me; 9 in vain do they worship me, teaching as doctrines the commandments of men.
And He taught that people were wrong because they didn't know Scripture.
Matthew 22:29 But Jesus answered them, You are wrong, because you know neither the Scriptures nor the power of God.
Luke 24:45 Then he opened their minds to understand the Scriptures,.....