The law of the Lord is perfect, restoring the soul; The testimony of the Lord is sure, making wise the simple.
The precepts of the Lord are right, rejoicing the heart; The commandment of the Lord is pure, enlightening the eyes.
Psalms 19:7-8 (NASB)
The pure and the defiled
To the pure, all things are pure; but to those who are defiled and unbelieving, nothing is pure, but both their mind and their conscience are defiled.
They profess to know God, but by their deeds they deny Him, being detestable and disobedient and worthless for any good deed.
Titus 1:15-16 (NASB)
What should we dwell on?
Finally, brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if anything worthy of praise, dwell on these things.
Philippians 4:8 (NASB)
The wisdom from above
“But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy.”