Greek
4102. pistis -- faith, faithfulness ... so that you may prove what (2307) of God is, that which is good and acceptable and
perfect.
... On the distinction between (belief), and in the
Scriptures see Js
... /greek/4102.htm - 18kTorrey's TopicalTextbook
Psalm 19:7The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple.
Torrey's Topical Textbook—AKJV