John 9.22
His parents said these things because they feared the Jews, for the Jews had agreed already that if anyone confessed that He was Christ, he would be put out of the synagogue.
Jesus had healed a man who was born blind and he could see perfectly. Jesus did things which wasn't appreciated by the religious people and hence they decided to exclude from the synagogue, any one who confessed Jesus as the Messiah.
Persecution is part of a believers life. None of us should be surprised about persecution. Jesus said if they persecuted me, they will persecute you also. Paul said every one who wants to live a godly life will be persecuted. Rejoice, Jesus said, when people speak evil against you, curse you and want to kill you. In this situation, the persecution people were facing was exclusion from the synagogue. The question is not whether you will be persecuted or not, the question is about your response to persecution. Daniel refused to worship the image of King Darius and he was thrown into the lions den. Three of his friends refused to worship the image of King Nebuchadnezzar and they were thrown into the fiery furnace. But God protected Daniel and his friends. They responded to the persecution by saying, we will not give up our faith in God and we know our God will save us and even if He didn't save we will not compromise. That's powerful. We live in a planet where Satan is the god of this world system and therefore persecution for a believer is inevitable.
Friend, how strong is your faith? What would you do, if believing in Jesus could exclude you from the synagogue or you could lose your life, family, house or everything you got, would you still be faithful to Him? Everything that Satan meant for your harm, God will turn it around for your good. Be faithful to him.
Be strong and hold fast to Jesus and He will strengthen you and you will see his glory. Don't be afraid and don't give up. Remember, his grace is sufficient.