'Prosper' in the Bible

Only be thou strong and very courageous, that thou mayest observe to do according to all the law, which Moses my servant commanded thee: turn not from it to the right hand or to the left, that thou mayest prosper whithersoever thou goest.

This book of instruction must not depart from your mouth; you are to recite it day and night so that you may carefully observe everything written in it. For then you will prosper and succeed in whatever you do.