Story of Mahatma Gautam Budha

Lord Krishna told Arjun "Do not give this knowledge of Geeta to Abhakt. It can be misused"

Gautam Budha before sleeping used to always tell his disciples that now it is night time, you be busy with your rest of the job. Night time rest of job means "Dhyan" get immersed in your dhyan(concentration) towards God and if you die in dhyan it is like Nirvan or Moksh.

Once while the satsang of Lord Budha was going on, a thief and a prostitute entered and joined in to hear the satsang. When lastly before retiring to bed Lord told his disciples "now be busy with your rest of the job". The thief when heard this murmured to himself "See, how sensible is Lord Budha, he can understand that my job at night time is to steal and now he has given me permission to do my rest of the job. He is antaryami. He can introspect. The thief felt very happy.

Same way the prostitute felt. She felt happy that Lord has given her permission to do her rest of the job at night. Both of them left to do their respective jobs.

Here the Lords words had a negative impact on thief and the prostitute. It was misused.

Lord Krishna is telling Arjun to be cautious while imparting or sharing my knowledge. Check the person, if he is really interested and keen to do something good, then only give him this knowledge. Otherwise it will go to a wrong person and he may misuse it. "Idam te naatapaskaya naabhaktaya kadachana"