To be pure of heart means to be free of all selfish intentions and self-seeking desires. What a beautiful goal! How many times have any of us performed an act perfectly free of any personal gain? But an act of pure and selfless giving brings happiness to all.
And this all happens the very moment when you are saved, because when you are born again you indeed become a brand new person. A brand new person who is walking arm and arm with Jesus Christ on a road to spiritual purity, spiritual growth, spiritual maturity, and spiritual strength.