Caesar represents to us the government or the world in this fallen state. We owe much to this world (even as imperfect as it is). Therefore, we must expend some of ourselves in labours and efforts to support, maintain, and improve this world and society. At the same time, we must realize that nothing in this world is permanent (It will not always be this way.) Everything is passing away. Thus, while this world is a gift from God and is important to Him and to us, we must realize that it can only hold a secondary place in our hearts and minds.
The first place in our hearts and minds belongs to God and our eternal home in Heaven. This is the only thing that can fulfil our heart's desire. Our hearts have been created for God and this perfect place called Heaven were all is in order and all is love. Therefore, our greatest efforts and time should be focused towards this rather than towards our current world.
We must build up treasure for heaven rather than for here. All the treasure in this current world is to be lost (consumed by rust, moth or thief). It is all passing away. The treasure built up in Heaven is permanent and never to be lost and will constitute an eternal joy for us. The stateliest mansions that we build up in this world for our bodies are nothing but refuse compared to the heavenly mansions that await our souls in eternity with God.
We must never lose the focus upon this heavenly mansion while we are absorbed in obtaining and maintaining an earthly shelter and existence for our bodies in this world. All that is in this world as the wise man says is, vanity. "Vanity of vanity and all is vanity". It is all fleeting and empty and cannot satisfy us no matter how much or how refined it may be. If we spend all that we have and all that we are in pursuit of this, we will have wasted everything and gained nothing because it is all vein. What will it profit a man to gain the whole world if he loses his soul?
Perhaps we should then be inclined to spend all that we have and all that we are in pursuit of the eternal? This would seem to be a grand idea, but we cannot escape this world so easily. God has commanded us to care for our bodies and to work this earth. We cannot just foolishly rush off into eternity. This earth is a trial in which we can show God how much we love Him by loving one another even in the midst of this imperfection.
Anyone can love that which is perfect but it takes humility and faith to love that which is less perfect. The devils could easily have worshiped and honoured Christ in His divinity; it was His humanity that created the obstacle for them. Their pride refused to love someone less than spirit (Someone beneath them). This is exactly what we are commanded to do when we are told we must love one another as Christ has loved us. There are many who may be (at least from our own defective perspective) beneath us, and we must love them just as we love ourselves. This test trapped all the devils in Hell, and it will drag us down too if we follow their evil example.
The goods of this world are not for hording. God has given some more and others less so that we might have the opportunity to love one another and prove this love by giving and receiving freely in all simplicity and humility. We can take nothing with us, and it does no good to anyone amassed in piles. We must render to one another the things of this earth for their earthly existence.
This is not all; we must likewise render to one another the spiritual gifts of God. Because God has everything and is in need of nothing that we might be able to offer Him, He has commanded us to offer this to one another in His name. We render to God what is His when we love Him and keep His word by loving one another and practice not only the corporal works of mercy but also the spiritual ones as He commanded us to do.