According to Osho, 'pure in heart' means egolessness matured from humility into total inner clarity—an inner poverty where anger, greed, lust and possessiveness have vanished. Humility is the doorway; purity is the fulfillment. When humility ripens into complete purity, one becomes 'poor in spirit'—a receptive emptiness—and the kingdom of heaven is revealed as one’s own, with all else naturally added.
Let go of your ego and inner clutter through humility until you’re empty inside—then heaven is already yours.