“Blessed are the pure in heart, for they will see God”
How does Pope Francis define purity of heart?
83. This Beatitude speaks of those whose hearts are simple, pure and undefiled, for a heart capable of love admits nothing that might harm, weaken or endanger that love.
Old and New Testament support for the notion of a deep and most honest orientation of human commitment. First from the prophets, on the whole:
The Bible uses the heart to describe our real intentions, the things we truly seek and desire, apart from all appearances. “(People see) the appearance, but the Lord looks into the heart” (1 Samuel 16:7). God wants to speak to our hearts (cf. Hosea 2:16); there he desires to write his law (cf. Jeremiah 31:33). In a word, he wants to give us a new heart (cf. Ezekiel 36:26).
… and from Wisdom Literature and the Gospels:
84. “Guard your heart with all vigilance” (Proverbs 4:23). Nothing stained by falsehood has any real worth in the Lord’s eyes. He “flees from deceit, and rises and departs from foolish thoughts” (Wisdom 1:5). The Father, “who sees in secret” (Matthew 6:6), recognizes what is impure and insincere, mere display or appearance, as does the Son, who knows “what is in man” (cf. John 2:25).
Every human being engages in some level of interior deception. The person who aspire to being “pure of heart” likely sees herself or himself as a project in progress rather than a finished result.