I think that this verse can be a very intimidating one because we are all very aware of the lack of purity in our thoughts and motives. Even so, I think that Jesus is speaking to us of the wonder of the new creation that Paul references in his writings. Consider what Jesus said to Nicodemus in John's gospel:
"Truly, truly, I say to you, unless one is born againAgain Jesus speaks of seeing.. seeing God and His kingdom. Perhaps it was because of their unregenerate and impure hearts that the religious leaders of Jesus' day could not see God standing before them and see the works of God's kingdom done before their eyes.
he cannot see the kingdom of God."
This speaks to my need to live from this reborn pure heart that was born in me so many years ago. It instructs me to see not with my head but with my heart. It challenges me to move beyond the natural and physical aspects of life and press into the invisible and eternal. It helps me to know that when I see with my heart I will see God and His kingdom.
Lord, help me to live from, and see with, my heart.