The law of the Lord is perfect, converting the soul: the testimony of the Lord is sure, making wise the simple. (Psalms 19:7 KJV)
The testimony of Christ is confirmed in those who look into the perfect law of liberty, and will continue therein, not being a forgetful hearer, but a doer of the work, and they shall be blessed in their deed.
“Blessed are the undefiled in the way, who walk in the law of the Lord. Blessed are they that keep his testimonies, and that seek him with the whole heart.
I hate vain thoughts: but thy law do I love. Thou art my hiding place and my shield: I hope in thy word.”
Psalms 119:1-2, 113-114 KJV