Jos 1:7 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.
It takes courage and strength to live as God has instructed us to live. There are forces that try to pull us both to the right and to the left. God’s blessing is on those who neither take away from His Word, nor add to it. We prosper spiritually when we follow God and God alone.