As Jesus leaves the temple, He encounters a man who was blind from birth. The disciples are quick to ask Him whose fault was it that the man was born blind. Jesus responds that it was no one's fault, but rather he was born blind so that God's works could be revealed in him. Jesus then proceeds to heal the man.
The entire passage is written as an allegory of how we are all spiritually blind. We do not not choose to be blind neither did we choose to be born. But Jesus opens our eyes in due time, just as we will be born again in our resurrection.
Consequently, when we understand that blindness is not a choice which means that the world does not have a choice because of enslavement to sin, our first reaction should not be to condemn others for their sinful nature. Instead we should have compassion on everyone who has not yet realized they are set free from the slavery of their sins through Jesus. Unfortunately, the church is consistently known for condemning others when that is the last thing Our Father says we are to do.