Purity has so many facets: it means free from contamination, morally upright, unmixed with any other substance, clean, clear. Precious metals are considered pure after they have undergone smelting or refining, when all other metals or non-metallic materials have been removed. Food is considered pure when it is organic, unadulterated by chemicals and additives. Air is pure when it is not marred by smog, smoke, or other toxic substances. Water is pure when it comes, untainted, from the ground, or when it has been treated to remove all contaminants.
So what does it mean for a heart to be pure? This next Beatitude of Jesus gave me the chance to ponder that, though I’ve really only scratched the surface. I think, though , that this is one of the most beautiful of the Matthew Beatitudes: “Blessed are the pure in heart: for they shall see God.”
“The Pure in Heart” is written in dactylic heptameter: /x/x/x/x/x/x/, using the form AAAA, BBBB.
“Blessed are the pure in heart: for they shall see God”
Unadulterated, undiluted, clean and clear–
Heart for God and God alone, no other loves come near,
Room for only One consuming Passion, real, sincere,
Waiting for His coming, when the Bridegroom shall appear.
All this world’s distractions, the pursuits that once you knew
Pale beside the One Who died and rose again for you.
Now your heart and mind are single, and your eye is too.
And one day you’ll see Him face to face, the purest View.
The Occasional Caesura: A Pause Midline 
And that purity can only be found in the Word. Psalms 119:140 “Thy word is very pure: therefore thy servant loveth it.”
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Yes! “The words of the Lord are pure words:
as silver tried in a furnace of earth, purified seven times.
Thou shalt keep them, O Lord,
thou shalt preserve them from this generation for ever.” (Psalm 12-6-7)
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