365 Verses that can transform your life.-2.24-Why did Jesus say the heart was so important to keep clean and well conditioned?

Mark 7.
⁵ The Pharisees and the scribes *asked Him, “Why do Your disciples not walk according to the tradition of the elders, but eat their bread with impure hands?” ⁶ And He said to them, “Rightly did Isaiah prophesy of you hypocrites, as it is written:

‘This people honors Me with their lips,
But their heart is far away from Me.
⁷ ‘But in vain do they worship Me,
Teaching as doctrines the precepts of men.’

⁸ Neglecting the commandment of God, you hold to the tradition of men.”

⁹ He was also saying to them, “You are experts at setting aside the commandment of God in order to keep your tradition. ¹⁰ For Moses said, ‘Honor your father and your mother’; and, ‘He who speaks evil of father or mother, is to ^[d]be put to death’; ¹¹ but you say, ‘If a man says to his father or his mother, whatever I have that would help you is Corban (that is to say, ^[e]given to God),’ ¹² you no longer permit him to do anything for his father or his mother; ¹³ thus invalidating the word of God by your tradition which you have handed down; and you do many things such as that.”