When will mankind adopt the Faith ?

Once Varqa asked Baha'u'llah, "How will the Cause of God be universally adopted by mankind?" Baha'u'llah said that first, the nations of the world would arm themselves with infernal engines of war, and when fully armed would attack each other like bloodthirsty beasts. As a result, there would be anormous bloodshed throughout the world. Then the wise men from all nations would gather together to investigate the cause of such bloodshed. They would come to the conclusion that prejudices were the cause, a major form being religious prejudice. They would therefore try to eliminate religion so as to eliminate prejudice. Later they would realize that man cannot live without religion. Then they would study the teachings of all religions to see which of the religions conformed to the prevailing conditions of the time. It is then that the Cause of God would become universal.

~ Revelation of Baha'u'llah, vol. 4, p.56

Dealing with insults

The Buddha explained how to handle insult and maintain compassion.
One day Buddha was walking through a village. A very angry and rude young man came up and began insulting him. "You have no right teaching others," he shouted. "You are as stupid as everyone else. You are nothing but a fake."

Buddha was not upset by these insults. Instead he asked the young man "Tell me, if you buy a gift for someone, and that person does not take it, to whom does the gift belong?"

The man was surprised to be asked such a strange question and answered, "It would belong to me, because I bought the gift."

The Buddha smiled and said, "That is correct. And it is exactly the same with your anger. If you become angry with me and I do not get insulted, then the anger falls back on you. You are then the only one who becomes unhappy, not me. All you have done is hurt yourself."

"If you want to stop hurting yourself, you must get rid of your anger and become loving instead. When you hate others, you yourself become unhappy. But when you love others, everyone is happy."

The young man listened closely to these wise words of the Buddha. "You are right, o Enlightened One, "he said. "Please teach me the path of love. I wish to become your follower."

The Buddha answered kindly, "Of course. I teach anyone who truly wants to learn. Come with me."

~ Stories about Buddha