Surely God is good to Israel, to those who are pure in heart. Psalm 73:1
The Psalm writer Asaph equated the pure in heart with Israel. What’s interesting is similar words in the Beatitudes “blessed are the pure in heart for they shall see God. Psalm 4:8
So what is this “pure in heart”? Is it sinless perfection? Is it obtainable?
GotAnswers.org summarized it like this:
Being pure in heart involves having a singleness of heart toward God. A pure heart has no hypocrisy, no guile, no hidden motives. The pure heart is marked by transparency and an uncompromising desire to please God in all things. It is more than an external purity of behavior; it is an internal purity of soul.