This is why Jesus tells us that the pure in heart are rewarded with the vision of God. They see and experience him who is altogether pure, the one who is described as "the Father of heavenly lights who does not change like shifting shadows" (James 1:17). God's people see him now, with the eyes of faith. We see his hand in human history and we know his presence in our own lives. But as wonderful as this is, there is coming a day when that we will experience God in a way that surpasses anything we presently know.
The final book of the Bible, the book of Revelation (not Revelations, by the way...), speaks of this reality in symbolic language which transcends our present ability to comprehend it at this point in history. For instance, "I did not see a temple in the city, because the Lord God Almighty and the Lamb are its temple. The city does not need the sun or the moon to shine on it, for the glory of God gives it light, and the Lamb is its lamp. The nations will walk by its light, and the kings of the earth will bring their splendor into it... (Revelation 21:22-24). But here, as elsewhere in the Bible, experiencing this beatific vision is linked to purity and the diligent pursuit of holiness (cf. Revelation 21:27; Hebrews 12:14; Psalm 24:3-6).
Purity of heart is not easily attained, in fact, from a merely human standpoint it is beyond our grasp. We are impure by nature and so easily drawn to that which is impure as well. Purity, that is approved by God, only comes to us by faith as we follow the one who uttered this beatitude to the cross. It is only as we are washed in the blood of the Lamb that we are cleansed from our impurities and given the grace to seek after authentic purity from that point on. But whatever the difficulties, purity of heart is worth the struggle because in the end we are blessed with God himself. There is no greater reward or motivation.
Next time: "Blessed are the peacemakers, for they will be called children of God."
