The biggest difference between a child of God and a non-believer is the mind with which they approach life. As a child of God, you ought to approach life from a place where you are grateful. Whether it is work or life, you do so without murmuring because you do it as unto the Lord.
The verse teaches us that whatever is to be done must be done without murmuring and disputings. That does not mean that you will not have opportunities to murmur, but rather focus on developing a discipline for doing things without disputes. Because this will see you apart from a perverse generation.
Develop a stability within your system where you will never need to be at war with anyone. The only debt the bible allows us to have is the debt of love. Apart from love, owe no man anything. This is true Christianity.
Prophetic Declarations
Heavenly Father, we thank you for not only are you giving us grace to work hard but also the wisdom to do it excellently. Amen