When we allow the Blood of Jesus to do its work in our lives, God takes our hard hearts of stone and transforms our hearts into heart of flesh. He softens our hearts and gives us a new spirit. He takes all our stubborn pride exchanges it for humility. He takes all our sadness and gives us His joy. He takes all our selfishness and create in us a compassion and love for others. It is by His blood that we are changed into people that are able to be a light and impact the world around us.
Scripture reference: Ezekial 11:19-20