Mateo 5:8

8. Blessed are the pure in heart Here is a trait of character which God’s Spirit can alone produce. This is sanctification. It may exist in different degrees. It may be partial; it may be complete. Even when complete, it may, in this world, coexist with many an error of judgment, and many a defect of temperament. Yet it enables us to live without offending God, so as to maintain for us the permanent undiminished fulness of the divine approbation. And when the heart is clean, the eye is clear. When purity makes us like God, then can we realize and see his countenance. The eye of the pure spirit beholds the pure Spirit. Through the beams he shed down upon us, we can look up and see the face that shines. In the light of his smile we behold his smile. So the pure in heart shall see God.