This is a song that is so relevant to living the Christian life!  As Christians we all need revival at times. Over and over our flesh tends toward selfishness and insensitivity.  Our hearts get hard, so to speak. We need the Lord, by His Spirit, to break up the the hard, fallow ground in our hearts. Why? So that we can be yielded and tender again toward Him and so that we can walk in love toward others. We can’t live the Christian life in our own strength! It must be Him in and through us by His Spirit. Break our hearts Oh Lord! Revive your work in us!