“To the pure you show yourself pure” (Psalms 18:26, NIV). For those who pursue holiness and purge corruption from their lives God will reveal himself as a holy God and Lord. It is the pure who enjoy a relationship with the purity of God. Those who embrace the immorality and destructiveness of the world do not get to enjoy the pure goodness of God. He is hidden to them and instead of his purity they may experience the conviction and correction of God.
But to the pure God “shows himself” for when we are pure our faces are then unveiled and we “behold the glory of the Lord” (2 Cor. 3:18). This Psalm also reminds us of Matthew 5:8 where Jesus promises “blessed are the pure in heart for they shall see God”. Our highest happiness consists of beholding the love, power, beauty and wisdom of God. Thus, we are most blessed when we seek to “be holy for he is holy” for then he shows his pure nature to us and we partake.