Deuteronomy

This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.

Wherewithal shall a young man cleanse his way? by taking heed thereto according to thy word.

The law of the Lord is perfect, converting the soul: the testimony of the Lord is sure, making wise the simple.

And keep the charge of the Lord thy God, to walk in his ways, to keep his statutes, and his commandments, and his judgments, and his testimonies, as it is written in the law of Moses, that thou mayest prosper in all that thou doest, and whithersoever thou turnest thyself:

Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.