Deuteronomy 30:10
If you shall listen to the voice of the LORD your God, to keep his commandments and his statutes which are written in this book of the law, and if you turn to the LORD your God with all your heart, and with all your soul.
Torrey's Topical Textbook—AKJV

Joshua 1:8
This book of the law shall not depart out of your mouth; but you shall meditate therein day and night, that you may observe to do according to all that is written therein: for then you shall make your way prosperous, and then you shall have good success.
Torrey's Topical Textbook—AKJV