Bless and curse

John 7:45-52
 The temple guards wend back, did not arrest Jesus. They amazed the words of Jesus.
Pharisees and rulers do not believe Jesus, and they said the people are mob that nothing of the law- there is a curse on them. They were deceived.
Nicodemus, who spoke a justice words "Does our law condemn anyone without first hearing him to find out what he is doing?"
Why?
The Pharisees and rulers are not want to arrest Jesus, and they  look down other people.
Pharisees should ask Jesus more detail where he was born. This is the the way that Jesus have to be. For he obeyed the command of the Lord.
To be a higher position usually contend to despise others. It is seems do the right thing, actually they are protect their ow benefit.
How?
Who is the blessing man?
No matter what I am or what I will be, do not despise other, before I speak I should make it clear and make my command.