@chbartist sir
In whose mind deceit is not deceptive, his mind is completely clean like a mirror.
The man who has treachery in his mind can never talk to him by looking at the eye. The person who smells from the front and the evil person behind the back can never be trusted. Identifying a trustworthy person and identifying a treacherous person is a very difficult task. Yes, by their activities, it becomes an impression that the belief is worthy or not. We learn to identify individuals with our mistakes and experiences. The calamities coming upon us are the best way to identify such people because during that time only your well wishers will accompany you, whereas the silly person will betray the side.
Yes, in some cases we have to believe blindly even though we do not have to cheat because we do not have any choice.