Matthew 5:8 "Blessed are the pure in heart,
For they shall see God."
First, what is pure? No contamination, filth, impurities. The bible says our heart is wicked or evil. How does this reconcile? True, in of ourselves, our hearts are dirty. Yet, when given to God, He cleans our heart. He washes our heart with the pure water of His word. When our hearts desires line up with Gods, they are pure. This is why the un-regenerate man can never view God properly. He has a impure heart. We who are born again, by Gods Spirit, we see God as He is. Thus, we are so over joyed or aka blessed.