We are told not to receive the grace of God in vain. The Father keeps showering us with His amazing grace. We just need to keep our hearts open. As we do that our hearts are kept soft and moldable in the hands of Christ. Sin on the other hand hardens our hearts, so either our hearts hardens more and more, or it gets more and more soft and humble before God. That will be the fruit of staying connected to the love and grace of God!