Joshua 1:7-8

AKJV(i) 7 Only be you strong and very courageous, that you may observe to do according to all the law, which Moses my servant commanded you: turn not from it to the right hand or to the left, that you may prosper wherever you go. 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.